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US Patent: 2,589,620
Apparatus for Cleaning, Dressing, and Grinding Wheels
Patentee: Guy H. Leffel (exact or similar names) - Springfield, Clark County, OH USPTO Classifications: 125/11.03, 15/256.51, 15/262, 451/444 Tool Categories: metalworking machines : grinders : grinder dressers Assignees: Thompson Grinder Co. - Springfield, Clark County, OH Manufacturer: Thompson Grinder Co. - Springfield, Clark County, OH Witnesses: Unknown	Patent Dates: Applied: May 03, 1947 Granted: Mar. 18, 1952 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Thompson Grinder Co.
Description: This patent was listed on a Thompson Grinder Co. patent plate.

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