Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Business
Class Information
Number: 434/190
Name: Education and demonstration > Mathematics > Magnet included in teaching means
Description: Subject matter including a magnet.










Patents under this class:

Patent Number Title Of Patent Date Issued
8287280 Teaching aid device and method of teaching Oct. 16, 2012
7862882 Re-positionable magnetic art apparatus Jan. 4, 2011
7500852 Teaching aid device and method of teaching Mar. 10, 2009
7296999 Educational display mitt for magnetic playing pieces and method Nov. 20, 2007
7273375 Teaching aid device and method of teaching Sep. 25, 2007
6793251 Binder with magnetically retained pages Sep. 21, 2004
5949050 Magnetic cards having a layer being permanently magnetized in a fixed configuration Sep. 7, 1999
5933329 Board for mounting display element Aug. 3, 1999
5820383 Magnetic manipulatives book Oct. 13, 1998
5809675 Board for mounting display element Sep. 22, 1998
5707238 Number and math education system Jan. 13, 1998
4865324 Magnetic wheel puzzle Sep. 12, 1989
4846689 Magnetic educational aid and teaching method Jul. 11, 1989
4838793 Activity display article with removable manipulatives Jun. 13, 1989
4377384 Three-dimensional teaching device Mar. 22, 1983
4366637 Set of advertising components Jan. 4, 1983
4295832 Educational toy Oct. 20, 1981











 
 
  Recently Added Patents
System and method for judging success or failure of work of robot
Systems and methods for determining muscle force through dynamic gain optimization of a muscle PID controller for designing a replacement prosthetic joint
Field emission cathode structure
Buffer pool extension for database server
Split-ring resonator creating a photonic metamaterial
Spacers for insulated glass units
Pressure-sensitive adhesive composition having an improved release behavior
  Randomly Featured Patents
Paving block
Voltage regulator with ferromagnetic filter
Sintered fiber filter
Drive scheme for a plurality of flourescent lamps
Compiler and compiling method
Recognition of electronic ink with late strokes
Monolithic semiconductor body with convex structure
Security tag housing
Programmable delay for digitizer circuits
Needle assembly