Work-clamping mechanism for sewing machines
United States Patent 1650588

Inventors:
Allen, Edward B.
Publication Date:
11/29/1927
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Assignee:
SINGER MFG CO
Primary Class:
112/76
Other Classes:
112/66
International Classes:
D05B3/06; D05B73/12; D05B85/06; D05B3/00; D05B73/00; D05B85/00