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US Patent: 841,396
Machine for Threading Pipes
Patentee: Frederick W. Hoefer (exact or similar names) - Freeport, Stephenson County, IL USPTO Classifications: 408/175, 470/188, 470/67, 470/75 Tool Categories: metalworking machines : metal threading machines : pipe threading machines Assignees: Hoefer Manufacturing Co. - Freeport, Stephenson County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 14, 1905 Granted: Jan. 15, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hoefer Manufacturing Co.

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