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Class Information
Number: 434/189
Name: Education and demonstration > Mathematics > Base conversion or use of base other than ten
Description: Subject matter relating to a set of numbers based on calculations with any number except ten, or to transformation between bases.










Patents under this class:

Patent Number Title Of Patent Date Issued
7677895 Arithmetic measurement system Mar. 16, 2010
7275934 Magnetic apparatus for demonstration of binary numbers Oct. 2, 2007
6988462 Memory assist device with clips Jan. 24, 2006
6811401 Binary rotation teaching game Nov. 2, 2004
6758675 Base ten primary teaching kit Jul. 6, 2004
6595778 Base ten primary teaching kit Jul. 22, 2003
6315675 Score counter for billiards game Nov. 13, 2001
5951299 Method for mathematical representation, manipulation and problem solving, and kit Sep. 14, 1999
5484287 Character revealing game, method of making, and method of playing Jan. 16, 1996
5213506 Binary educational device May. 25, 1993
H733 Educational device for demonstrating nonstandard counting procedures Feb. 6, 1990
4662846 Apparatus for mechanically composing a mosaic pattern of balls May. 5, 1987
4633070 Informational device adapted to convert binary to decimal numerals Dec. 30, 1986
4585419 Didactic aid for the teaching of any number system Apr. 29, 1986
4474558 Didactic game based on selection of the trajectories followed by balls Oct. 2, 1984
4424039 Mathematics teaching device Jan. 3, 1984
4332565 Display system Jun. 1, 1982
4132015 Teaching-learning aid for numeration systems and basic computer concepts Jan. 2, 1979
4043561 Puzzle and method of playing same Aug. 23, 1977
4006344 Mechanical binary number adding and subtracting apparatus Feb. 1, 1977
3994076 Modular computer teaching device Nov. 30, 1976











 
 
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