Unitary presser bar spring regulating devices
United States Patent 3303804
US Patent References:
Sewing machine pressure bar
- - 2554970
Presser mechanisms for sewing machines
- - 2874663
Adjustable presser device for sewing machines
- - 3055326
Tension regulator for sewing machine presser bar
- - 3089447
Sewing machine pressure bar
- - 2554970
Presser mechanisms for sewing machines
- - 2874663
Adjustable presser device for sewing machines
- - 3055326
Tension regulator for sewing machine presser bar
- - 3089447
Inventors:
Paul, Lesort
Publication Date:
02/14/1967
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Export Citation:
Assignee:
SINGER CO
Primary Class:
International Classes:
D05B29/02; D05B29/00