Patent
Suchergebnisse für: TEACHING

-
Patent:11099009
17.01.2011 R. C. Bennet : Calculator or Abacus [11.06%]
-
Patent:11142651
17.01.2011 T. Winiecki : Educational Appliance [10.47%]
-
Patent:11218931
17.01.2011 H. G. Cuthbert : Apparatus for Teaching Arithmetic [25.41%]
-
Patent:11233544
17.01.2011 G. O. Bissey : Educational Device [20.37%]
-
Patent:11372087
17.01.2011 F. A. Roddy : Apparatus for Illustrating and Demonstrating the Principles of Pure Arithmetic [6.75%]
-
Patent:11405193
17.01.2011 W. Favreau : Educational and Entertaining Device [8.37%]
-
Patent:11450395
17.01.2011 N. Y. Troidl : Educational Appliance [14.29%]
-
Patent:11514270
17.01.2011 J. L. Thomson : Means for Teaching Reading and the like [19.43%]
-
Patent:11532011
17.01.2011 R. M. Williamson : Arithmetic Teaching Device [6.58%]
-
Patent:11694405
17.01.2011 N. Y. Troidl : Educational Appliance [6.27%]
-
Patent:11720499
17.01.2011 W. Walker : Educational Computing Device [7.55%]
-
Patent:11728584
17.01.2011 C. W. Wright : Device for Teaching Arithmetic [16.32%]
-
Patent:11736603
17.01.2011 M. R. Kennedy : Game [9.67%]
-
Patent:11866133
17.01.2011 F. L. Simon : Educational Device [12.88%]
-
Patent:12063501
17.01.2011 A. F. Harbo : Device for Teaching Music Reading [26.72%]
-
Patent:12150508
17.01.2011 C. Kuiper : Appliance for use in the Teaching of Arithmetic [22.10%]
-
Patent:12188723
17.01.2011 L. R. Posey : Educational Device [12.41%]
-
Patent:12342674
17.01.2011 E. Kotcher : Air Speed Computer [5.82%]
-
Patent:12359837
17.01.2011 H. A. Freedlander : Copy Slide Rule [6.77%]
-
Patent:12389394
17.01.2011 A. H. Thomas : Electric Mathematical Educational Appliance [12.84%]
-
Patent:12457332
17.01.2011 Wade, F. A. (P) et al : Educational Apparatus [6.09%]
-
Patent:12507223
17.01.2011 Rosenfeld, M. (P) : Educational Device [11.84%]
-
Patent:12584601
17.01.2011 Mauser, F. P. (P) : Alphabet and Numeral Teaching Guide [20.90%]
-
Patent:1264572
17.01.2011 A. B. Schwenninger : Apparatus for Teaching Arithmetic [20.22%]
-
Patent:12646631
17.01.2011 Lazar, N. (P) : Combined Abacus and Counting Rack [6.36%]
-
Patent:12654164
17.01.2011 Seidenberg, O. (P) : Abacus [8.05%]
-
Patent:12655737
17.01.2011 Don Dero, S. F. (P) : Abacus [10.30%]
-
Patent:12708797
17.01.2011 Hamer, E. F. (P) : Counting Frame [15.82%]
-
Patent:12779541
17.01.2011 R. L. Rich : Adding Machine [5.99%]
-
Patent:12826360
17.01.2011 Sih Hsuin Tsiang : Automatic Circuit Selector [6.18%]
-
Patent:12844890
17.01.2011 G. A. Oliver et al : Mathematics Teaching Aid [18.56%]
-
Patent:12857686
17.01.2011 S. Blake : Abacus [11.80%]
-
Patent:12888753
17.01.2011 T. S. Swarts : Arithmetic Instruction Apparatus [11.37%]
-
Patent:12894337
17.01.2011 W. G. Rawlings : Slide Rule Type of Educational Device [9.54%]
-
Patent:12914617
17.01.2011 W. W. Fritschi et al : Magnetic Core Circuits [5.87%]
-
Patent:12998916
17.01.2011 A. D. Frankenfield : Two-Dimension Slide Rule [6.31%]
-
Patent:13005269
17.01.2011 F. L. Woolley : Slide Rule Trainer [5.92%]
-
Patent:13016628
17.01.2011 F. L. Woolley : Slide Rule Trainer [6.57%]
-
Patent:13043503
17.01.2011 S. M. Kritser : Navigation Aid [10.94%]
-
Patent:13076272
17.01.2011 A. F. Schott : Abacus [10.61%]
-
Patent:13127686
17.01.2011 A. E. Goldfarb : Calculator [5.79%]
-
Patent:13129628
17.01.2011 R. Hall : Music Teaching Device [16.69%]
-
Patent:13136076
17.01.2011 A. F. Schott : Educational Tool Adapted to Faciliate Teaching the Arithmetic of Fractions [16.75%]
-
Patent:13138879
17.01.2011 R. W. Flewelling : Calculating Device [9.52%]
-
Patent:13147556
17.01.2011 Prusmack, Murray (P) : Calculating Device [12.63%]
-
Patent:13177595
17.01.2011 F. H. Yonker et al. : Teaching Device [30.21%]
-
Patent:13178108
17.01.2011 M. Mc. Coy : Vector and Trigonometric Static Balance Computer [6.39%]
-
Patent:13273262
17.01.2011 L. J. Smith : Teaching Device [12.15%]
-
Patent:13289324
17.01.2011 H. Benson : Arithmetical Teaching Device [16.61%]
-
Patent:13387392
17.01.2011 D. A. Kurz : Abacus with Mechanical Means for Holding Unit Counters in Position [14.45%]
-
Patent:13402482
17.01.2011 J. S. Rankin : Matematics Teaching Device [20.14%]
-
Patent:13406900
17.01.2011 Hunt, George R. (P) : Powered Slide Rule Assembly [5.70%]
-
Patent:13410483
17.01.2011 J. S. Hogan : Horsepower Computer [12.58%]
-
Patent:13437268
17.01.2011 R. S. White : Mathematical Averaging Apparatus [5.82%]
-
Patent:1345445
17.01.2011 C. Pelletier : Ball Calculator [10.20%]
-
Patent:13455034
17.01.2011 A. F. Schott : Mathematics Teaching Tool [26.91%]
-
Patent:13467307
17.01.2011 H. O. Levitt : Scaling and Calculating Instrument [6.01%]
-
Patent:13472117
17.01.2011 C. W. Iverson et al. : Musical Playing Aid [9.94%]
-
Patent:13492726
17.01.2011 R. B. Stewart : Analytical Instrument [7.61%]
-
Patent:13500558
17.01.2011 B. J. Matejczyk : Device for the Teaching of Numeration Systems to all Bases [21.51%]
-
Patent:13531877
17.01.2011 J. E. Miller : Ratio and Proportion Demonstrating Unit [10.41%]
-
Patent:13554074
17.01.2011 James C. Rickey : Stringed Instrument Teaching Device [11.06%]
-
Patent:13633287
17.01.2011 Fitz A. Squires : Numerical Base System Teaching Device [18.75%]
-
Patent:13652831
17.01.2011 David M. Lehmann : Calculating Device for estimating Turbine Steam Rates [9.68%]
-
Patent:13672072
17.01.2011 Joseph S. Akiyama : Educational Device [11.49%]
-
Patent:13678796
17.01.2011 Vito Puopolo : Music Slide Rule [26.34%]
-
Patent:13688418
17.01.2011 Henry Allen Wilson : Manual Computing Device [25.11%]
-
Patent:13717941
17.01.2011 Benajmin E. Tomerlin : Probability Teaching Aid [43.96%]
-
Patent:13728930
17.01.2011 William Maron : Music Training Device [16.66%]
-
Patent:13771409
17.01.2011 James C. Rickey : Music Teaching Device ... [10.96%]
-
Patent:137825
17.01.2011 J. H. R. Reffelt : Arithmetical Aid [14.78%]
-
Patent:13785240
17.01.2011 Elgie E. Hill : Chord Teaching Device for a Dtringed Instrument [37.63%]
-
Patent:1378866
17.01.2011 E. P. Clark & D. L. Wren : Abacus [20.68%]
-
Patent:13791254
17.01.2011 Müller, Egon : Teaching and Demonstrating the Harmonic System [19.80%]
-
Patent:1380532
17.01.2011 H. O. R. Siefert : Educational Appliance [12.16%]
-
Patent:13811205
17.01.2011 Mary Ann Pitzler : Sensorial Counting Board [10.53%]
-
Patent:13960046
17.01.2011 Choong, Alan Chong Seong : Music Teaching Device [17.82%]
-
Patent:13995378
17.01.2011 Darnell, Eula K. (307 Baldwin, West Helena, AR 72390) : Mathematics visual teaching aid [42.68%]
-
Patent:14048731
17.01.2011 Baguioro, Anastasia : Educational game apparatus [11.30%]
-
Patent:14176472
17.01.2011 Devanney, Mary T. (2665 Section Rd., Cincinnati, OH 45237) : Numbers teaching aid [26.60%]
-
Patent:14257174
17.01.2011 Presley, Wayman R. (RFD #1, Makanda, IL 62958) : Device for teaching counting [22.29%]
-
Patent:14419081
17.01.2011 Steinmann, Phyllis R. : Mathematical teaching/learning aid and method of use [24.25%]
-
Patent:1452302
17.01.2011 J. Denison : Device for Teaching Arithmetic [46.22%]
-
Patent:14571191
17.01.2011 Graube, Peteris E. (1145 Collindale Ave., NW., Grand : Funnel teaching method and apparatus [54.62%]
-
Patent:14629429
17.01.2011 Horie, Tsuyoshi (7-15, Iwamoto-cho 3-chome,, Chiyoda-ku, : Abacus with each counter held in position by friction or magnetic attraction [11.66%]
-
Patent:14713009
17.01.2011 Borenson, Henry (1469 Neshaminy Valley Dr., Bensalem, PA : Teaching apparatus and method for solving algebraic linear equations [40.67%]
-
Patent:14750398
17.01.2011 Rude, Kenneth L. (c/o George Spector, 233 Broadway RM 3615, : Chord speller [17.34%]
-
Patent:14882472
17.01.2011 Sigman, Susan J. (West Lafayette, IN), Meade, Paula A. : Fluoride supplement calculator [10.62%]
-
Patent:14883277
17.01.2011 Laisure, Thomas J. : Educational board game for teaching mathematics and logic [25.68%]
-
Patent:14884973
17.01.2011 Pak, Kyoungsik : Mathematic teaching aid [28.93%]
-
Patent:14900255
17.01.2011 Laghi, Aldo A. : For two-stage Quincunx [16.85%]
-
Patent:14993952
17.01.2011 Yeh, Cheng-Siung Lehrmittel (P) : Arithmetic counter [11.27%]
-
Patent:15007840
17.01.2011 Gaskell, Martin : Operations processor [23.70%]
-
Patent:15039603
17.01.2011 Pocius, Frank (P) : Educational system for teaching counting and equation solving strategies [39.56%]
-
Patent:15149269
17.01.2011 Ylitalo, Howard (R.R. 2, Box 106, Cokato, MN 55321) : Manual teaching calculator [18.86%]
-
Patent:15219289
17.01.2011 Derr, Patricia K. (1653 Bentana Way, Reston, VA 22090) : Mathematical teaching aid [42.39%]
-
Patent:15334026
17.01.2011 Ylitalo, Howard (2500 Montgomery Ave. SW., Cokato, MN : Manual sliding calculator [10.39%]
-
Patent:15370538
17.01.2011 Sidray, Fahim R. : Devices for transforming pictorial images in orthogonal dimensions [26.25%]
-
Patent:15423682
17.01.2011 Hildebrandt, Raymond E. (7213 Huntcliff, West Bloomfield, : Numbering system teaching aid [22.35%]
-
Patent:15433611
17.01.2011 Dreyfous, Ricardo (Condominio Montebello, Apt. J119, : Teaching apparatus and method for visually representing polynomial expressions [25.06%]
-
Patent:15524522
17.01.2011 Hesnan, John (P) : Music Learning Aid [21.19%]
-
Patent:1560651
17.01.2011 H. Rödelsperger : Arithmetical apparatus [12.04%]
-
Patent:15674075
17.01.2011 Sherman, Betty E. (P.O. Box 196, Buford, GA 30518) : Math teaching unit [38.02%]
-
Patent:15725380
17.01.2011 Kennelly, Kim (140 Ingrid Pl., Oldsmar, FL 34677) : Combination writing board and abacus [23.57%]
-
Patent:1580516
17.01.2011 B. S. Andrew : Abacus [13.41%]
-
Patent:15876212
17.01.2011 Hartung, Paul G. (Greenwood Township, Columbia County, PA) : Apparatuses and kits for teaching mathematics [11.69%]
-
Patent:15954509
17.01.2011 Torres, Anthony (4985 W. 8th St., Greeley, CO 80634) : Educational device [22.63%]
-
Patent:15967787
17.01.2011 Tsao, Chin-Chen (No. 152, Tung Pei Street, Chung Shan : Educational display with a clock and with numeral and date blocks [31.59%]
-
Patent:15989035
17.01.2011 Okoye, Godwin (P.O. Box 4605, Albuquerque, NM 87196) : Arithmetic teaching device [11.55%]
-
Patent:1604963
17.01.2011 A. R. Breinl : Apparatus for Teaching Arithmetic [28.84%]
-
Patent:16056553
17.01.2011 Huang, Pingsheng (20 Alpine Rd., Towaco, NJ 07082) : Apparatus for math teaching and self-learning [24.71%]
-
Patent:16077079
17.01.2011 Barnes, Latrell : Dual-teaching-aid game [17.92%]
-
Patent:16129551
17.01.2011 Martin, Lowry G. : Mathematical graph board [17.68%]
-
Patent:16142784
17.01.2011 Wood, Michael C. : Mathematical learning game and method [9.66%]
-
Patent:16155836
17.01.2011 Hancock, Tapp (8000 Kroll Way #2, Bakersfield, CA 93311) : System for teaching mathematics [41.68%]
-
Patent:16192594
17.01.2011 Wackowski, Sally L. (Vernal, UT) : Fraction ruler [25.22%]
-
Patent:1637964
17.01.2011 J. P. Johnsen : Abacus [6.90%]
-
Patent:16413099
17.01.2011 Rainey, John Desmond (P.O. Box 40-288, Glenfield, Auckland, : Educational device for teaching simple and complex mathematical concepts [10.41%]
-
Patent:16447300
17.01.2011 Greenberg, Joseph G. : Educational card game [10.87%]
-
Patent:16464504
17.01.2011 Wingert, Diane : Mathematical game of amusement [10.01%]
-
Patent:16513708
17.01.2011 Evans, Elizabeth A. (99-337 Uwau Dr., Aiea, HI 96701) : Mathematics teaching system [28.35%]
-
Patent:16579101
17.01.2011 Phan, Que N. (1798 Donna La., #2, San Jose, CA 95124-3019) : Basic mathematics teaching and learning aid [13.06%]
-
Patent:1861541
17.01.2011 F. Rieck : Calculating Stand [13.44%]
-
Patent:1964064
17.01.2011 R. F. Smith : Educational Appliance [6.82%]
-
Patent:1D178150
17.01.2011 A. K. Ruddell : Arithmetic Teaching Aid [61.95%]
-
Patent:1D234360
17.01.2011 E. R. Duncan : Teaching Machine [46.73%]

-
Patent:FR2771832
04.06.1999 Le Noane Pierrick, Ropers Jean Yves, Ricard Jean Luc : Measurement and decimal conversion Slide Rule for teaching purposes [7.52%]

-
Patent:GB142212
12.02.1919 Clauson, A. E. : Abacuses [29.86%]
-
Patent:GB167699
16.09.1920 Darnley, Percey Henry (P) and Richards, Barnett (P) : Teaching arithmetic.-A device for facilitating the learning of multiplication and division [43.74%]
-
Patent:GB183006038
13.11.1830 John Tyrrell : Apparatus for Teaching Arithmetic [45.24%]
-
Patent:GB190302484
02.02.1904 Magne, Fernand Leonard (P) : Improved Mechanical Calculating Device [27.95%]
-
Patent:GB190325518
22.09.1904 Gess, Gustav (P) : Apparatus Combining a Blackboard with Means for Teaching Calculating and Reading [65.74%]
-
Patent:GB190409171
09.02.1905 Dougald McCoig Cowan : Improvements in Apparatus for Teaching Arithmetic [44.76%]
-
Patent:GB190425302
21.09.1905 James Thomas Reeve : An Improved Abacus or Apparatus chiefly designed for use in Teaching Arithmetic [42.95%]
-
Patent:GB191211598
07.11.1912 Buchert, Adolf (P) : Improvements in Calculating Apparatus for Teaching Arithmetic [23.86%]
-
Patent:GB191317890
05.08.1913 Montessori, Maria (P) : Abacuses [23.88%]
-
Patent:GB2364412
23.01.2002 Stone Celia Anne : Abacus [15.89%]
-
Patent:GB334319
04.09.1930 Montessori, Maria (P) : Device for teaching young children elementary multiplication [42.59%]
-
Patent:GB359210
22.10.1931 Sarah Weaver Stephens : Improved apparatus for teaching calculations to children and for like [45.72%]
-
Patent:GB370060
07.04.1932 John James : Apparatus for teaching arithmetic [26.30%]
-
Patent:GB407274
15.03.1934 Giulio Sbocchelli : Improved device for demonstrating the fundamental arithmetical operations [25.00%]
-
Patent:GB529461
01.06.1939 Marjorie Annie Nightingale : Improvements in and relating to devices or apparatus for teaching mathematics [43.84%]
-
Patent:GB580444
09.09.1946 Samuel Lindon : An improved counting device [10.04%]
-
Patent:GB587220
17.04.1947 Lancelot Hogben : Apparatus for the use in the teaching of arithmetic operations [28.40%]
-
Patent:GB667706
05.03.1952 : educational Device for teaching multiplication and division [27.49%]
-
Patent:GB706807
07.04.1954 Svensson, Sven Hjalmar (P) Skolmaterieldistrib A B : Improvements in devices for illustrating and teaching the elementary technic of calculating [27.24%]
-
Patent:GB715321
15.09.1954 Edward Ernest Gooding Field : Improvements in or relating to apparatus for teaching music [43.39%]
-
Patent:GB979150
01.01.1965 Clark, John Arnold (P) Addo Limited (P) : An improved calculator for teaching simple arithmetic [9.86%]

-
Patent:US1174689
07.03.1916 Frank J. Coleman : Appliance for teaching arithmetical fractions [45.24%]
-
Patent:US1438144
05.12.1922 Stevenson Robert A : Toy calculator [16.31%]
-
Patent:US1661095
28.02.1928 Eugene Rowe Joseph : Calculating Instrument [10.02%]
-
Patent:US1719108
02.07.1929 Eleanor Fennell : Game for teaching multiplication [19.08%]
-
Patent:US1867888
19.07.1932 Obidine Wladimire J : Calculating Device [6.91%]
-
Patent:US1941733
02.01.1934 Saul Badanes : Counting and calculating card [10.88%]
-
Patent:US1955392
17.04.1934 Harold I. Shimberg : Device for teaching trigonometric functions [45.24%]
-
Patent:US1977842
23.10.1934 Saul Badanes : Counting and calculating device [10.38%]
-
Patent:US1992366
26.02.1935 Joseph B. Fisher : Arithmetic teaching device [45.72%]
-
Patent:US2206294
02.07.1940 Catherine Stern : Device for the progressive teaching of arithmetic [45.24%]
-
Patent:US2326413
10.08.1943 Thompson, George (P) : Harmonic Calculator [5.38%]
-
Patent:US2585458
12.02.1952 Gordon Julia : Game apparatus for teaching the use of the multiplication table [7.29%]
-
Patent:US2600084
10.06.1952 Hjalmar Svensson Sven : Instructional device for calculating [10.13%]
-
Patent:US2624126
06.01.1953 Bolognino Charles, Bolognino Secondo : Toy Device for teaching multiplication tables [15.28%]
-
Patent:US2687581
31.08.1954 Walden Williams : Calculating Device [6.29%]
-
Patent:US2803069
20.08.1957 William F. Struna : Classroom teaching device [45.72%]
-
Patent:US2906037
29.09.1959 Rubin Irving C : Dial type Slide Rule for teaching arithmetic [17.66%]
-
Patent:US2910786
03.11.1959 Howard Healey, Cohn Irwin Great American Plastics Co : Calculating device for teaching arithmetic [14.21%]
-
Patent:US2950542
30.08.1960 Alice M. Steelman : Educational aid for teaching arithmetic [45.72%]
-
Patent:US3006082
31.10.1961 Miles A. Libbey : Educational device for teaching binary computation [42.52%]
-
Patent:US3133358
19.05.1964 Chris Schramm : Teaching aid [46.22%]
-
Patent:US3283420
08.11.1966 Schott, Andrew (P) : Calculator [5.43%]
-
Patent:US3377717
16.04.1968 Thomas M. Rowe : Device for teaching addition and subtraction [45.24%]
-
Patent:US3388483
18.06.1968 Joseph A. Weisbecker : Computer-type game and teaching aid [44.76%]
-
Patent:US3392948
16.07.1968 Janes Frank T : Slide Rule mounting structure [6.11%]
-
Patent:US3446433
27.05.1969 Tibbetts, Ernest (P) Burroughs (P) : Pushbutton Calculator [6.58%]
-
Patent:US3455033
15.07.1969 Han Bing-Hou Bing Hou Han : Ball Calculator [6.70%]
-
Patent:US3526355
01.09.1970 Anderson Alyn-Dale : Calculator [6.31%]
-
Patent:US3526973
08.09.1970 Delves James A H Brees Plastics Ltd : Calculating Instrument [15.71%]
-
Patent:US3710456
16.01.1973 Jerman M : Teachimg Aid [35.82%]
-
Patent:US502184
25.07.1893 Gallegos, José : Device for teaching arithmetical calculations [44.76%]
-
Patent:US6323410
27.11.2001 Rackow, Daniel (P) : Slide Rule musical scale teaching device [10.61%]
-
Patent:US6551110
22.04.2003 Hastie, Patricia Catherine (P) : Visual educational device for teaching literacy [10.62%]