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US Patent: 454,929
Screw-driver
Patentee: John Q. Day (exact or similar names) - Red ClIff, CO USPTO Classifications: 74/127 Tool Categories: screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: None Manufacturer: Not known to have been produced Witnesses: Jno. L. Campbell L. S. Pierce	Patent Dates: Applied: Jul. 21, 1890 Granted: Jun. 30, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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