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Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

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Patente aus den USA 2000


  • Patent:US6056553 02.05.2000 Huang, Pingsheng (20 Alpine Rd., Towaco, NJ 07082) : Apparatus for math teaching and self-learning
  • Patent:US6062864 16.05.2000 Rood, Beverly E. : Math skills game
  • Patent:US6065970 23.05.2000 Elliott, Karen Crawford : Method of playing an educational mathematical game
  • Patent:US6065971 23.05.2000 Lennon, Ralph E. (625 River Ave., Providence, RI 02908) : Finger ring counting device
  • Patent:US6077079 20.06.2000 Barnes, Latrell : Dual-teaching-aid game
  • Patent:US6079710 27.06.2000 Brown, Beatrice T. : Educational number game
  • Patent:US6079983 27.06.2000 Kane, Jr., James T. (94 Adams St. #108, Waltham, MA 02453) : Educational instrument for numbers
  • Patent:US6109924 29.08.2000 Sanford, Sr., Jack G. (301 California Ave., Columbus, KS : Educational card system
  • Patent:US6129388 10.10.2000 Howard M. Bromberg Flexi/Group Inc. : Slide chart with slide-stop flaps
  • Patent:US6129551 10.10.2000 Martin, Lowry G. : Mathematical graph board
  • Patent:US6132216 17.10.2000 Muntean, Michaela (Shelter Island, NY), Gamarello, Paul Workman Publishing Co Inc : Childs counting book
  • Patent:US6135348 24.10.2000 Hayes, Paul T. (3680 S. 1100 E., Salt Lake City, UT 84106) : Apparatus and methods for calculating gamma radiography variables
  • Patent:US6142784 07.11.2000 Wood, Michael C. : Mathematical learning game and method
  • Patent:US6142785 07.11.2000 Williams, Trudy (5316 Sussex La., Pace, FL 32571) : Educational set of gloves
  • Patent:US6155836 05.12.2000 Hancock, Tapp (8000 Kroll Way #2, Bakersfield, CA 93311) : System for teaching mathematics
  • Patent:US6158133 12.12.2000 Carlson, Christopher (Wausau, WI), Cornell, Robert : Oval cutter


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