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US Patent: 1,378,290
Adjustable Tool Holder
Patentee: John H. Smith (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 279/100, 279/105.1 Tool Categories: metalworking machines : drilling and boring : drilling and boring tool holders Assignees: Eclipse Interchangeable Counterbore Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 02, 1919 Granted: May 17, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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