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US Patent: 221,986
Improvement in Screw-Drivers
Patentee:
Charles S. Wells (exact or similar names) - New Haven, CT

USPTO Classifications:
279/90

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Richard F. Lyon
George Terry
Patent Dates:
Applied: Feb. 24, 1879
Granted: Nov. 25, 1879

Patent Pictures:
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