Title:
Differential gage
United States Patent 1340198
Inventors:
Wilkinson, John B.
Publication Date:
05/18/1920
Export Citation:
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Assignee:
John, White C.
Primary Class:
73/736
Other Classes:
116/70, 116/268, 116/DIG.42, 138/44
International Classes:
G01L7/04
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