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US Patent: 201,372
Improvement in screw-drivers
Patentee: Jonathan B. West (exact or similar names) - Geneseo, NY USPTO Classifications: 74/127, 74/424.75, 74/424.94, 74/89.45 Tool Categories: screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: None Manufacturer: Not known to have been produced Witnesses: R. F. Osgood Jacob Spahn	Patent Dates: Applied: May 04, 1877 Granted: Mar. 19, 1878 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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