[Pagina principale]

Rechnerlexikon

Die große Enzyklopädie des mechanischen Rechnens

3.209.10.183 | Log in | Aiuto

  DE  EN  FR  IT 
Pagina principale
Tutte le pagine
Ultime modifiche

Versione stampabile

Articolo
Immagine
Brevetto

Pagine speciali

Brevetto

Search results for: EDUCATIONAL


  Nazione  Data  Score 
 1860 - 1870 1880 - 1890 1890 - 1900 1900 - 1910 1910 - 1920 1920 - 1930 1930 - 1940
  • Patent:US1866133 05.07.1932 F. L. Simon : Educational Device [22.09%]
  • Patent:US1941733 02.01.1934 Saul Badanes : Counting and calculating card [12.10%]
  • Patent:GB407274 15.03.1934 Giulio Sbocchelli : Improved device for demonstrating the fundamental arithmetical operations [27.82%]
 1940 - 1950 1950 - 1960 1960 - 1970
  • Patent:US2950542 30.08.1960 Alice M. Steelman : Educational aid for teaching arithmetic [50.88%]
  • Patent:US2971268 14.02.1961 H. Zimmerman : Quiz Game Devices [8.01%]
  • Patent:US3006082 31.10.1961 Miles A. Libbey : Educational device for teaching binary computation [47.32%]
  • Patent:US3129628 21.04.1964 R. Hall : Music Teaching Device [11.26%]
  • Patent:US3136076 09.06.1964 A. F. Schott : Educational Tool Adapted to Faciliate Teaching the Arithmetic of Fractions [18.64%]
  • Patent:US3298104 17.01.1967 D. V. Smith : Geometric Design Instrument [6.96%]
  • Patent:US3309017 14.03.1967 M. A. Koskela : Educational Calculating Device [20.78%]
  • Patent:US3402482 24.09.1968 J. S. Rankin : Matematics Teaching Device [14.54%]
  • Patent:US3412470 26.11.1968 R. C. Williams et al. : Educational Device [25.16%]
  • Patent:US3419972 07.01.1969 J. A. Kitzinger : Educational Aid ... [10.10%]
 1970 - 1980
  • Patent:US3526973 08.09.1970 Delves James A H Brees Plastics Ltd : Calculating Instrument [8.33%]
  • Patent:US3540648 17.11.1970 Mcgee Charles G Charles G Mcgee : Slide Calculator For Direct Addition And/Or Subtraction Of Integer Qualities In Two Number Systems [6.56%]
  • Patent:US3672072 27.06.1972 Joseph S. Akiyama : Educational Device [21.65%]
  • Patent:US3678796 25.07.1972 Vito Puopolo : Music Slide Rule [12.28%]
  • Patent:USD231357 16.04.1974 M. R. Meyers and M. Langieri : Educational Mathematical Toy [51.43%]
  • Patent:US3811205 21.05.1974 Mary Ann Pitzler : Sensorial Counting Board [11.71%]
  • Patent:GB1384087 19.02.1975 Platemakers Educational und Research Institute : Apparatus for calculating halftone screen exposures [48.28%]
  • Patent:US4048731 20.09.1977 Baguioro, Anastasia : Educational game apparatus [26.40%]
 1980 - 1990
  • Patent:US4218609 19.08.1980 Chin, Yi (P) (23356 Batey Ave., Harbor City, CA 90710) Chen, Yi (P) : Educational mechanical calculator [23.53%]
  • Patent:US4416633 22.11.1983 Gulack, Max A. : Educational and recreational mathematical device in the form of a band, [12.57%]
  • Patent:US4812124 14.03.1989 Colodner, Jesse (P) : Hexadecimal abacus [12.16%]
  • Patent:US4882472 21.11.1989 Sigman, Susan J. (West Lafayette, IN), Meade, Paula A. : Fluoride supplement calculator [11.82%]
  • Patent:US4883277 28.11.1989 Laisure, Thomas J. : Educational board game for teaching mathematics and logic [48.38%]
  • Patent:US4884973 05.12.1989 Pak, Kyoungsik : Mathematic teaching aid [11.53%]
 1990 - 2000
  • Patent:US5039603 13.08.1991 Pocius, Frank (P) : Educational system for teaching counting and equation solving strategies [26.00%]
  • Patent:US5205747 27.04.1993 Tan, Daravuth (1821 Josey La., Apt. G, Carrollton, TX : Bead calculator educational toy [47.57%]
  • Patent:US5299806 05.04.1994 Fifer, Fred (P) University of Texas : Educational device [13.29%]
  • Patent:US5743741 28.04.1998 Fife, Patricia (1331 Traynor Rd., Concord, CA 94520) : Math jigsaw puzzle [28.09%]
  • Patent:US5769639 23.06.1998 Foster, Anne (P.O. Box 7241, Port Aransas, TX 78373) : Multi-educational device [30.75%]
  • Patent:US5836587 17.11.1998 Druce, Harry Frederick : Playing cards for an educational game [19.76%]
  • Patent:US5954509 21.09.1999 Torres, Anthony (4985 W. 8th St., Greeley, CO 80634) : Educational device [31.31%]
  • 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 [11.93%]
 2000 - 2010
  • Patent:US6065970 23.05.2000 Elliott, Karen Crawford : Method of playing an educational mathematical game [33.34%]
  • Patent:US6079710 27.06.2000 Brown, Beatrice T. : Educational number game [20.54%]
  • Patent:US6079983 27.06.2000 Kane, Jr., James T. (94 Adams St. #108, Waltham, MA 02453) : Educational instrument for numbers [30.36%]
  • Patent:US6109924 29.08.2000 Sanford, Sr., Jack G. (301 California Ave., Columbus, KS : Educational card system [32.65%]
  • Patent:US6142785 07.11.2000 Williams, Trudy (5316 Sussex La., Pace, FL 32571) : Educational set of gloves [33.90%]
  • Patent:US6171111 09.01.2001 Buckner, Harry (2140 Sycamore, Apt. 3, Louisville, KY : Educational device for illustrating mathematical relationships [26.54%]
  • Patent:US6192594 27.02.2001 Wackowski, Sally L. (Vernal, UT) : Fraction ruler [28.06%]
  • Patent:US6196847 06.03.2001 Karunamuni, Anura J. (3147 McCord Blvd., Tallahassee, FL : Educational mathematical apparatus [12.96%]
  • Patent:US6200140 13.03.2001 Steane, Douglas Allan (P) : Double-beam math balance [11.12%]
  • Patent:US6206372 27.03.2001 Harris, Richard Lionel : Magic squares game [29.87%]
  • Patent:US6308426 30.10.2001 Lim, Hyoun-Gyu : Ellipsograph [12.11%]
  • Patent:US6375468 23.04.2002 Sundararajan, Kalyani (26 Royal Dominion Ct., Bethesda, MD : Educational tool [26.40%]
  • Patent:US6413099 02.07.2002 Rainey, John Desmond (P.O. Box 40-288, Glenfield, Auckland, : Educational device for teaching simple and complex mathematical concepts [37.05%]
  • Patent:US6447300 10.09.2002 Greenberg, Joseph G. : Educational card game [35.63%]
  • Patent:US6551110 22.04.2003 Hastie, Patricia Catherine (P) : Visual educational device for teaching literacy [11.82%]
  • Patent:US6712614 30.03.2004 Henderson, Gerald (P) : Abacus calculator [12.43%]

Create Patent:
Nazione:    Number: 
Patentsearch:
Nazione:  Year: da a
Search for: