Title:
Safety device
United States Patent 1746163


Inventors:
Perkins, George B.
Application Number:
US33065429A
Publication Date:
02/04/1930
Filing Date:
01/05/1929
Assignee:
Perkins, George B.
Primary Class:
Other Classes:
188/38, 188/61
International Classes:
B61H9/04
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