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Portable safety light
US 2,972,739 A
Filed
: 07/07/1959
Issued
: 02/21/1961
Est. Priority Date
: 07/07/1959
Status: Expired due to Term
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Current Assignee
Ray C. Opper
Original Assignee
Ray C. Opper
Inventors
Opper, Ray C.
Application Number
US03/825,453
Time in Patent Office
595 Days
Field of Search
US Class Current
340/321
CPC Class Codes
B60Q 7/00
Arrangement or adaptation o...
F21V 19/047
by using spare light source...
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