Time clock mechanism
United States Patent 2145082

Inventors:
Grayson, John H.
Publication Date:
01/24/1939
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Assignee:
Grayson, John H.
Primary Class:
74/3.540
Other Classes:
431/86, 200/38FA, 74/56, 200/39A, 968/613, 239/DIG.015
International Classes:
G04C23/16; G04C23/00