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US Patent: 414,174
Work Holder for Milling Machines
Patentee: Charles H. Trask (exact or similar names) - Lynn, Essex County, MA USPTO Classifications: 269/95, 409/221, 451/411, 74/1R, 74/813R Tool Categories: metalworking tools : jigs and fixtures Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 12, 1888 Granted: Oct. 29, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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