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Electric clock fire alarm
US 2,552,331 A
Filed
: 09/08/1947
Issued
: 05/08/1951
Est. Priority Date
: 09/08/1947
Status: Expired due to Term
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Current Assignee
Anthony H. Lamb
Original Assignee
Anthony H. Lamb
Inventors
Lamb, Anthony H.
Application Number
US02/772,634
Time in Patent Office
1,338 Days
Field of Search
US Class Current
340/590
CPC Class Codes
G08B 17/06
Electric actuation of the a...
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