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US Patent: 3,404,457
Hand Tool
Patentee: John E. Swanstrom, Sr. (exact or similar names) - Duluth, MN USPTO Classifications: 30/267, 606/174, 606/208, 76/104.1, 81/416 Tool Categories: pliers Assignees: Diamond Tool and Horseshoe Co. - Duluth, MN Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 26, 1966 Granted: Oct. 08, 1968 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen Diamond's history

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