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US Patent: 2,338,763
Portable Grinding Machine
Patentees: Robert S. Beverlin (exact or similar names) - Toledo, Lucas County, OH Ernest A. Hall (exact or similar names) - Toledo, Lucas County, OH USPTO Classifications: 114/144R, 114/154, 114/172, 116/21, 116/67R Tool Categories: specialty tools : valve grinding tools specialty tools : valve reseating tools trade specific : vehicle repairer : vehicle mechanic : valve and seat maintenance Assignees: Hall Manufacturing Co. - Toledo, Lucas County, OH Manufacturer: Hall Manufacturing Co. - Toledo, Lucas County, OH Witnesses: Unknown	Patent Dates: Applied: Jan. 19, 1943 Granted: Jan. 11, 1944 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hall Manufacturing Co.

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