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Hand operated pocket size emergency signalling device
US 3,315,166 A
Filed
: 08/18/1964
Issued
: 04/18/1967
Est. Priority Date
: 08/18/1964
Status: Expired due to Term
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Current Assignee
Lloyd R. Crump
Original Assignee
Lloyd R. Crump
Inventors
Crump, Lloyd R.
Application Number
US04/390,488
Time in Patent Office
973 Days
Field of Search
US Class Current
340/321
CPC Class Codes
H04B 1/0346
Hand-held transmitters
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