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US Patent: 1,784,908
Differential Chuck
Patentee: Joseph C. Regan (exact or similar names) - West Hartford, Hartford County, CT USPTO Classifications: 279/114 Tool Categories: metalworking machines : metal lathes : metal lathe chucks Assignees: E. Horton & Son Co. - Windsor Locks, Hartford County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 28, 1928 Granted: Dec. 16, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for E. Horton & Son Co.

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