Rotation indicating device
United States Patent 2189235

Inventors:
Wanner, Walter E.
Publication Date:
02/06/1940
View Patent Images:
Download PDF 2189235 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
SOCONY VACUUM OIL CO INC
Primary Class:
137/242
Other Classes:
62/125, 366/142, 165/11.100, 62/123, 137/552, 366/149, 62/342
International Classes:
G01P13/00