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US Patent: 1,382,003
Drill-holder
Patentee: Henry W. Lightner (exact or similar names) - Grand Rapids, MI USPTO Classifications: 451/375 Tool Categories: metalworking machines : grinders : sharpening machines : drill sharpening machines Assignees: Wilmarth & Morman Co. - Grand Rapids, MI Manufacturer: Covel Mfg. Co. - Benton Harbor, MI Wilmarth & Morman Co. - Grand Rapids, MI Witnesses: Unknown	Patent Dates: Applied: Feb. 24, 1920 Granted: Jun. 21, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Covel Mfg. Co. Vintage Machinery entry for Wilmarth & Morman Co.
Description: This patent date was seen on a Yankee drill grinder from Covel Mfg. Co.

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