Title:
Electric-alarm device for clocks
United States Patent 1521600

Inventors:
Crowe, Florance P.
Publication Date:
01/06/1925
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Assignee:
Crowe, Florance P.
Primary Class:
368/253
Other Classes:
968/592, 200/35R
International Classes:
G04C21/20; G04C21/00