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Class Information
Number: 434/342
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 > Question or problem located on endless belt or reel mounted strip
Description: Subject matter including a question or problem carrier in the form of a flexible loop or a strip supported at least in part by a reel.










Patents under this class:

Patent Number Title Of Patent Date Issued
6108515 Interactive responsive apparatus with visual indicia, command codes, and comprehensive memory functions Aug. 22, 2000
5252075 Medical personnel and patient communication indicator device Oct. 12, 1993
4482329 Teaching toy Nov. 13, 1984
4321633 Tape recorder Mar. 23, 1982











 
 
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