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Title:
Device for driving the hook shaft of a double-stitch sewing machine
United States Patent 3112720
Inventors:
Luigi, Bono
Application Number:
US14134161A
Publication Date:
12/03/1963
Filing Date:
09/28/1961
Assignee:
Necchi, Spa
Primary Class:
Other Classes:
74/23, 112/315
International Classes:
D05B57/30
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US Patent References:
Foreign References:
DE636969C1936-10-19