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Class Information
Number: 434/210
Name: Education and demonstration > Mathematics > Arithmetic > Place value relative to decimal point
Description: Subject matter relating to the value of a number according to its position relative to a decimal point, e.g., a number located two places to the left of a decimal point represents units valued at 10 each.

Patents under this class:

Patent Number Title Of Patent Date Issued
8438744 Ruler and method of use May. 14, 2013
6729883 Numeric teaching device May. 4, 2004
5769639 Multi-educational device Jun. 23, 1998
5738524 Multi-function teaching game box Apr. 14, 1998
4856998 Teaching aids Aug. 15, 1989
4772208 Apparatus for use in teaching mathematics Sep. 20, 1988
4585419 Didactic aid for the teaching of any number system Apr. 29, 1986
4445865 Method of teaching mathematics May. 1, 1984
4372742 Arithmetical teaching aid Feb. 8, 1983
4331424 Math educational apparatus May. 25, 1982
4176474 Visual teaching aid for number concept Dec. 4, 1979
3995378 Mathematics visual teaching aid Dec. 7, 1976

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