Electronic alarm
United States Patent 2355752

Inventors:
Repking, Joseph T.
Publication Date:
08/15/1944
View Patent Images:
Download PDF 2355752 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Repking, Joseph T.
Primary Class:
340/642
Other Classes:
361/170, 256/10, 307/132E, 340/664, 307/97
International Classes:
G08B23/00