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US Patent: 527,696
Screw Driver
Screw holding screwdriver
Patentee:
Maximilian Keehn (exact or similar names) - New York, NY

USPTO Classifications:
81/453

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph Fleischl
Robert Taylor
Patent Dates:
Applied: Jul. 06, 1894
Granted: Oct. 16, 1894

Patent Pictures:
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