Electric alarm apparatus for bathtubs
United States Patent 2602846
US Patent References:
/1168699.html
- - 1168699
/2041549.html
- - 2041549
Burglar alarm
- - 2259696
Portable signaling aid for the deaf and hard of hearing
- - 2350413
/1168699.html
- - 1168699
/2041549.html
- - 2041549
Burglar alarm
- - 2259696
Portable signaling aid for the deaf and hard of hearing
- - 2350413
Inventors:
Nathan, Polikoff
Publication Date:
07/08/1952
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Assignee:
Nathan, Polikoff
Primary Class:
Other Classes:
200/84R, 200/61.200, 340/616, 200/244
International Classes:
G01F23/36; G01F23/30