Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 434/216
Name: Education and demonstration > Mathematics > Geometry, trigonometry, or physical mathematic model structure > Demonstration means using filament (e.g., string, etc.) to define geometric shape
Description: Subject matter demonstrated by means including a strand such as string or wire which delineates a geometric form.

Patents under this class:

Patent Number Title Of Patent Date Issued
6702582 Device and method for solving circles Mar. 9, 2004
6213779 Conic section activity boards Apr. 10, 2001
6132217 Method and apparatus for teaching relationship of trigonometric functions between unit circle and rectangular coordinate system Oct. 17, 2000
6065968 Toy for forming variable three-dimensional design May. 23, 2000
6024574 Visual aids for understanding characteristics of geometric figures Feb. 15, 2000
5639090 Geoboard with movable pins Jun. 17, 1997
5328374 Geometry board Jul. 12, 1994
5215467 Mathematical instruction board and method of use Jun. 1, 1993
4371344 Tension model device Feb. 1, 1983

  Recently Added Patents
Processing circuitry for use with a position sensor
Multifunction switch for vehicle having lighting module
Side portion of a circular saw blade
Calibration device and related method for phase difference between data and clock
Method for conformal plasma immersed ion implantation assisted by atomic layer deposition
Method for determining the local position of at least one mobile radio communication device based on predetermined local positions of adjacent radio communication devices, associated radio com
Socket type MEMS device with stand-off portion
  Randomly Featured Patents
Photographic light-sensitive and heat developable material
Memory module having buffer for isolating stacked memory devices
Voltage stress testing of core blocks and regulator transistors
Drive mechanisms suitable for use in drug delivery devices
Offering and provisioning secured wireless virtual private network services
Stackable stirrup mat
Compressor for gas turbine and gas turbine
Gutter drainer assembly
Solid state imaging device and method of manufacturing the same