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US Patent: 229,008
Hand-screw
Patentee: Charles F. Pettingell (exact or similar names) - Salisbury, MA USPTO Classifications: 269/176 Tool Categories: work holding : clamps : hand screws Assignees: None Manufacturer: C. F. Pettingell - Amesbury, MA Witnesses: William S. Clarkson Joseph T. Clarkson	Patent Dates: Applied: Oct. 06, 1879 Granted: Jun. 22, 1880 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Carl Matthews "Vintage Machinery" entry for C. F. Pettingell

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