[Main Page]

Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

34.237.76.91 | Log in | Help

  DE  EN  FR  IT 
Main Page
All pages
Recent changes

Printable version
Discuss article

article
image
patent



Special pages
Pfeil.gif Patents  Pfeil.gif USA  Pfeil.gif 1999

Patente aus den USA 1999


  • Patent:US5870830 16.02.1999 Wu, Yen-Hung (14 Summer Rd., Brookline, MA 02146) : Conic section compass
  • Patent:US5876212 02.03.1999 Hartung, Paul G. (Greenwood Township, Columbia County, PA) : Apparatuses and kits for teaching mathematics
  • Patent:US5951299 14.09.1999 Kim, Linda S. (1842 Westwood Rd., Troy, OH 45373) : Method for mathematical representation, manipulation and problem solving, and kit
  • Patent:US5954509 21.09.1999 Torres, Anthony (4985 W. 8th St., Greeley, CO 80634) : Educational device
  • Patent:US5960576 05.10.1999 Bruce N. Robinson : Range, bullet drop, and angle calculator for use with telescopic gun sights
  • Patent:US5967787 19.10.1999 Tsao, Chin-Chen (No. 152, Tung Pei Street, Chung Shan : Educational display with a clock and with numeral and date blocks
  • Patent:US5989035 23.11.1999 Okoye, Godwin (P.O. Box 4605, Albuquerque, NM 87196) : Arithmetic teaching device
  • Patent:US5993388 30.11.1999 Michael W. Kattan Peter T. Scardino : Nomograms to aid in the treatment of prostatic cancer
  • Patent:US5997305 07.12.1999 Mangles, Linda (63 Rosemary Road, Wickersley, Rotherham, : Flexible planar apparatus
  • Patent:US6006986 28.12.1999 Whalen, Edward E. (101 Lombard St., San Francisco, CA : Global time calculator


According to copyright you are allowed to cite verbatim from rechnerlexikon.de when giving the reference.