TREA

Mathematical learning game

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Information

  • Patent Grant
  • D427637
  • Patent Number
    D427,637
  • Date Filed
    Wednesday, July 14, 1999
    27 years ago
  • Date Issued
    Tuesday, July 4, 2000
    26 years ago
  • US Classifications
    Field of Search
    • US
    • D19 59
    • D19 60
    • D19 62
    • D19 64
    • D21 478
    • 040 309
    • 040 111
    • 040 430
    • 040 506
    • 040 493
    • 040 503
    • 434 188
    • 434 191
    • 434 197
    • 434 206
    • 434 208
    • 434 209
    • 434 215
    • 434 406
    • 434 412
    • 235 87 R
    • 273 155
    • 101 110
  • International Classifications
    • 1907
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for a mathematical learning game, as shown and described.
US Referenced Citations (12)
Number Name Date Kind
0463230 Hooly Nov 1891
0613432 Szenhak Nov 1898
0731175 Goodman Jan 1903
1391986 Smith Sep 1921
3548524 Rohnow Dec 1970
3883968 Suzuki May 1975
3927613 Nantz Dec 1975
4651992 Danino et al. Mar 1987
4865324 Nesis Sep 1989
4902230 Jones Feb 1990
5007840 Gaskell Apr 1991
5674076 Billings et al. Oct 1997
Continuations (1)
Number Date Country
Parent 094898 Jun 1998