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Vacuum switch
United States Patent 1997288
Inventors:
Anderson, Howard F.
Publication Date:
04/09/1935
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Download PDF 1997288
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Assignee:
Anderson, Howard F.
Primary Class:
200/19.260
Other Classes:
218/118, 218/134, 218/140, 218/123
International Classes:
F02P7/063
;
F02P7/00