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US Patent: 1,789,411
Portable power-driven threading tool
Patentees: Herman W. Oster (exact or similar names) - Cleveland, OH Glenn D. Sleeth (exact or similar names) - Cleveland, OH USPTO Classifications: 408/124, 470/67 Tool Categories: handheld power tools metalworking machines : metal threading machines : pipe threading machines Assignees: Oster Mfg. Co. - Cleveland, OH Manufacturer: Oster Mfg. Co. - Cleveland, OH Witnesses: Unknown	Patent Dates: Applied: Mar. 10, 1924 Granted: Jan. 20, 1931 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Oster Mfg. Co.

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