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US Patent: 1,858,693
Chuck
Patentee: Charles E. Van Norman (exact or similar names) - Springfield, Hampden County, MA USPTO Classifications: 279/110, 279/139, 279/156, 451/398 Tool Categories: work holding : vises : chucks Assignees: Van Norman Machine Tool Co. - Springfield, Hampden County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 25, 1928 Granted: May 17, 1932 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Van Norman Machine Tool Co.

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