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Electric switch
United States Patent 2139072
Inventors:
Fisher, Lawrence E.
Frank, William H.
Publication Date:
12/06/1938
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Download PDF 2139072
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Assignee:
Fisher, Lawrence E.
Frank, William H.
Primary Class:
200/254
Other Classes:
200/294, 200/16R
International Classes:
H01H9/32
;
H01H11/04
;
H01H9/30