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US Patent: 1,381,509
Bolt-Heading Machine
Patentee: Frederick J. Schwimmer (exact or similar names) - Toledo, Lucas County, OH USPTO Classifications: 470/142 Tool Categories: metalworking machines : bolt heading machines Assignees: Howard Iron Works - Buffalo, Erie County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 13, 1919 Granted: Jun. 14, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Howard Iron Works

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