Title:
Signaling system
United States Patent 1919007


Inventors:
Chase, Leland H.
Application Number:
US55843631A
Publication Date:
07/18/1933
Filing Date:
08/21/1931
Assignee:
HOLMES ELECTRIC PROTECTIVE COM
Primary Class:
Other Classes:
340/306, 340/309.3
International Classes:
G07C1/20
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