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US Patent: 2,151,716
Wood Joint Fastener
Patentee: Mabel C. Putnam (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 411/457, 411/912 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: Mar. 21, 1935 Granted: Mar. 28, 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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