Circuit interrupting device
United States Patent 2172225
Inventors:
Schofield, Martha M.
Frankes, James H.
Publication Date:
09/05/1939
Assignee:
WESTINGHOUSE ELECTRIC & MFG CO
Other Classes:
218/90, 200/48R
International Classes:
H01H33/12; H01H33/76; H01H33/04; H01H33/70