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US Patent: 900,122
Yielding Bit and Tap Chuck
Patentee: William L. Procunier (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 408/140, 408/239R, 464/44, 470/103 Tool Categories: metalworking machines : drilling and boring : drill presses : drill press chucks metalworking tools : tap and die holders Assignees: None Manufacturer: William L. Procunier ; Procunier Safety Chuck Co. - Chicago, Cook County, IL Witnesses: Unknown	Patent Dates: Applied: Jun. 10, 1907 Granted: Oct. 06, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for William L. Procunier ; Procunier Safety Chuck Co.

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