Title:
Pressure switch
United States Patent 2780693


Inventors:
Frank, Mcclellan
Application Number:
US37318653A
Publication Date:
02/05/1957
Filing Date:
08/10/1953
Assignee:
HURON SPECIALTY COMPANY
Primary Class:
Other Classes:
340/565, 340/573.1, 340/666
International Classes:
H01H3/14
View Patent Images:
US Patent References:
2625621Electric mat switch1953-01-13
2128058Electric alarm mat1938-08-23
1776992Electric mat switch1930-09-30
1003145N/A1911-09-12
Foreign References:
GB392936A1933-05-25