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US Patent: 278,261
Screw-driver
Patentee: Christopher H. Olson (exact or similar names) - Decatur, IL USPTO Classifications: 74/127 Tool Categories: screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: None Manufacturer: Not known to have been produced Witnesses: L. P. Graham W. D. Kunkle	Patent Dates: Applied: Dec. 02, 1881 Granted: May 22, 1883 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: Information taken from Clifford D. Fales' database. One of four spiral screwdriver patents by same patentee as the commonly observed DECATUR COFFIN CO. screwdriver; see patent 306,096.

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