Swivel device
United States Patent 2195997
Inventors:
Frederick, Perkins
Publication Date:
04/02/1940
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Assignee:
PERKINS MARINE LAMP & HARDWARE
Primary Class:
Other Classes:
403/165, 411/44, 131/225, 59/95
International Classes:
F16B17/00; F16G15/08; F16G15/00