Lock for switch safety boxes
United States Patent 1473001

Inventors:
White, Benjamin B.
Publication Date:
11/06/1923
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Assignee:
ARMSTRONG & WHITE
Primary Class:
200/43.140
Other Classes:
70/203, 200/50.020, 70/159, 70/212, 70/63
International Classes:
H01H9/28; H01H9/20