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US Patent: 2,816,770
Tool Holder and Adapter
Patentees: Charles B. De Vlieg (exact or similar names) - Ferndale, Oakland County , MI Allen N. Sweeny (exact or similar names) - Grosse Pointe Farms, Wayne County, MI USPTO Classifications: 279/77, 279/97 Tool Categories: metalworking machines : metalworking machine tool holders Assignees: De Vlieg Corp. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 07, 1855 Granted: Dec. 17, 1957 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for DeVlieg Machine Co.

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