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US Patent: 938,341
Screw-driver
Patentee: John B. Ruple (exact or similar names) - RIfle, CO USPTO Classifications: 267/165, 74/127 Tool Categories: screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: None Manufacturer: Not known to have been produced Witnesses: J. C. Shott Eli McCama	Patent Dates: Applied: Apr. 13, 1907 Granted: Oct. 26, 1909 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. Retrofit return spring. Probably intended for North Brothers No. 30.

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