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US Patent: 2,678,218
Universal Expansion Chuck
Patentee: Charles H. Oslund (exact or similar names) - Holden, Worcester County, , MA USPTO Classifications: 192/76, 279/110, 279/2.15, 82/169 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: None Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: May 19, 1952 Granted: May 11, 1954 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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