Circuit interrupting device
United States Patent 2172225

Inventors:
Schofield, Martha M.
Frankes, James H.
Publication Date:
09/05/1939
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Assignee:
WESTINGHOUSE ELECTRIC & MFG CO
Primary Class:
218/12
Other Classes:
218/90, 200/48R
International Classes:
H01H33/12; H01H33/76; H01H33/04; H01H33/70