Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method of requesting CQI reports
Method for building taxonomy of topics and categorizing videos
Fuel cell support structure
Headset systems and methods
Systems and methods for minimization or elimination of diffusion effects in a microfluidic system
Electric motor
Instantaneous single click perpetual date mechanism
  Randomly Featured Patents
Intravenous set flow control device
Activator-stabilizers in heat developable photographic materials and processes
Window regulator
Concentric guidewire assembly
Device for the elimination of n.sup.th trace moving echoes and interference echoes in a radar
Hybrid antennas for electronic devices
Digital printing station in a multi-station discrete media printing system
Endpoint detection system for wafer polishing
Information processing apparatus, information processing system, method of processing information, and computer program
Theatre in the round projection apparatus and method