Title:
Rotation indicating device
United States Patent 2189235
Inventors:
Wanner, Walter E.
Publication Date:
02/06/1940
Export Citation:
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Assignee:
SOCONY VACUUM OIL CO INC
Primary Class:
137/242
Other Classes:
62/123, 62/125, 62/342, 137/552, 165/11.1, 366/142, 366/149
International Classes:
G01P13/00; G01P13/00
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