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US Patent: 560,281
Worm-screw
Patentee: John M. Rauhoff (exact or similar names) - Chicago, IL USPTO Classifications: 16/26, 16/DIG27, 16/DIG36, 411/378, 74/424.89 Tool Categories: woodworking tools : hand drills screwdrivers : screwdriver mechanisms : spiral screwdrivers Assignees: James Saunders - Marietta, GA Braman H. Loveless - Chicago, IL Manufacturer: Saunders & Rauhoff - Chicago, IL Witnesses: Annie C. Courtenay Thomas A. Banning	Patent Dates: Applied: Aug. 23, 1895 Granted: May 19, 1896 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: An example is reported, labeled "SAUNDERS & RAUHOFF / CHICAGO, ILL / PAT. MAY 19, 1896 / OTHER PATS PENDING".

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