Title:
Safety device for workmen on steel structures
United States Patent 2303954

Inventors:
Roke, Albert I.
Publication Date:
12/01/1942
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Assignee:
Roke, Albert I.
Primary Class:
182/3
Other Classes:
182/190, 294/85, 248/228.700
International Classes:
A62B35/00; E04G21/32