Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 434/341
Name: Education and demonstration > Question or problem eliciting response > Correctness of response indicated to examine by self-operating or examinee actuated means > By means including electrical component > Part of electric circuit completed when examinee places free element in contact with another element > Correct answer indicator lamp carried by free element
Description: Subject matter wherein the free element includes an indicator lamp as a part thereof, the lamp being illuminated upon the closing of the electric circuit to thereby indicate a correct response.

Patents under this class:

Patent Number Title Of Patent Date Issued
D474109 Connector for use in packaging aerosol containers May. 6, 2003
4868374 Self-contained detector device for checking information recorded on a carrier Sep. 19, 1989
4557694 Teaching device and method of using same Dec. 10, 1985
4323243 Electrical board game device Apr. 6, 1982
4306870 Contact-actuated light pencil Dec. 22, 1981
4194302 Answer-spotting electric instrument Mar. 25, 1980
4183152 Electrical indicating device Jan. 15, 1980
4115931 Individualized teaching system utilizing electrical continuity Sep. 26, 1978

  Recently Added Patents
Sound producing apparatus for vehicle
Mobile communication device
Methods for isolating ligands of the human bitter taste receptor TAS2R49
Compact semiconductor memory device having reduced number of contacts, methods of operating and methods of making
Sporting goal practice screen
Method and system for remapping processing elements in a pipeline of a graphics processing unit
Method and apparatus for connecting signal lines of multiple layers to certain contacts while preventing connections with other contacts
  Randomly Featured Patents
Polymers and polymerization processes
Feed unit for a container closure device
Eye drop dispensing bottle
Item of luggage
Method of producing high concentration polymer solution
Dynamic environmental information transmission
Plastic mouthpiece for simulated smoking
Two terminal axial lead suppressor and diode bridge device
Passive sensors for automatic faucets and bathroom flushers