Title:
Hold-up alarm
United States Patent 2135476

Inventors:
Rugh, Harry O.
Publication Date:
11/01/1938
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Assignee:
Elbridge, Gerry Bates
Claude, Vincent Yates
Kenneth, Brown C.
Primary Class:
340/539.110
Other Classes:
455/59, 200/DIG.002, 340/574, 200/52R, 273/DIG.019
International Classes:
G08B13/22