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US Patent: 2,170,462
Clamp Nail and Process of Making Same
Patentee: Mabel C. Putnam (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 411/478, 470/131, 470/34, 52/DIG.6 Tool Categories: hardware : fasteners : nails Assignees: Clamp Nail Co. - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 11, 1936 Granted: Aug. 22, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Clamp Nail Co.

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