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US Patent: 493,231
Chuck
Patentee: Alfred Muir (exact or similar names) - Manchester, England USPTO Classifications: 279/49 Tool Categories: metalworking machines : drilling and boring : drill presses : drill press chucks woodworking tools : hand drills : drill chucks woodworking machines : wood drilling and boring : drill presses : drill press chucks Assignees: None Manufacturer: William Muir & Co. - Manchester, England Witnesses: W. N. Woodruff Ella F. Braman	Patent Dates: Applied: Jun. 08, 1892 Granted: Mar. 07, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Grace's Guide page on Alfred Muir Vintage Machinery entry for William Muir & Co.
Description: The inventor was the son of William Muir.

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