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Grote; Stanley G. Patents
Assignee:
Grote; Stanley G.
Address:
La Mesa, CA
No. of patents:
1
Patents:




Patent Number Title Of Patent Date Issued
4025922 Traffic control system May 24, 1977
A traffic control system particularly suitable for aiding the blind includes an interrogating FM radio transmitter-receiving unit, which can be incorporated into a cane or the like, and a responding FM radio receiver-transmitter unit operatively associated with the traffic signal lig

 
 
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