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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: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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