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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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