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Class Information
Number: 434/200
Name: Education and demonstration > Mathematics > Arithmetic > Manually manipulated pin or peg
Description: Subject matter including an elongate member inserted by hand into a hole or a material.

Patents under this class:

Patent Number Title Of Patent Date Issued
8506300 Flight simulator Aug. 13, 2013
7549865 Mathematics manipulative board Jun. 23, 2009
6857876 Math game and method Feb. 22, 2005
6129551 Mathematical graph board Oct. 10, 2000
5989035 Arithmetic teaching device Nov. 23, 1999
5560611 Mathematical pyramid shape building game Oct. 1, 1996
5520541 Apparatus for teaching numbers and mathematics May. 28, 1996
5421732 Apparatus and method for teaching addition and subtraction Jun. 6, 1995
5346399 Educational game for children Sep. 13, 1994
5176521 Educational apparatus with interchangeable task assigning template Jan. 5, 1993
5167505 Educational aides and methods Dec. 1, 1992
5167509 Educational puzzle Dec. 1, 1992
5039603 Educational system for teaching counting and equation solving strategies Aug. 13, 1991
4979749 Multi-use number board Dec. 25, 1990
4927158 Game May. 22, 1990
4846692 Educational children's toy Jul. 11, 1989
4713009 Teaching apparatus and method for solving algebraic linear equations Dec. 15, 1987
4526550 Combination system and question and answer matching game Jul. 2, 1985
4188734 Educational toy Feb. 19, 1980
4177581 Device for teaching concepts of numbers and mathematical principles Dec. 11, 1979
4114290 Arithmetic dice game Sep. 19, 1978
4107855 Teaching aid for mathematics Aug. 22, 1978
3958344 Teaching aid for teaching numbers May. 25, 1976

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