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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











 
 
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