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US Patent: 464,574
Screw-driver
Patentee:
James Howard Lyon (exact or similar names) - New London, CT

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Thomas L. Miller
Harry B. Lester

Patent Dates:
Applied: Nov. 13, 1890
Granted: Dec. 08, 1891

Patent Pictures:
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