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US Patent: 106,796
Improvement in tension device for sewing-machine
Patentee:
George L. Du Laney (exact or similar names) - Mechanicsburg, PA

USPTO Classifications:
112/233

Tool Categories:
household : sewing machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. W. Dulaney
Joseph Leas
Patent Dates:
Granted: Aug. 30, 1870

Patent Pictures:
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