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US Patent: 102,787
Improvement in tension-devices for thread in sewing-machines
Patentee:
George L. Du Laney (exact or similar names) - Mechanicsburg, PA

USPTO Classifications:
242/155R

Tool Categories:
household : sewing machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph Leas
R. Wilson

Patent Dates:
Granted: May 10, 1870

Patent Pictures:
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