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US Patent: 472,591
Screw-Driver
Patentee: John F. Steward (exact or similar names) - Chicago, IL USPTO Classifications: 81/436 Tool Categories: screwdrivers Assignees: None Manufacturer: Not known to have been produced Witnesses: Ida E. Hills S. L. Steward	Patent Dates: Applied: Aug. 19, 1891 Granted: Apr. 12, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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