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CA Patent: CA-330,019
Valve Seat Grinder
Patentee: Ernest A. Hall (exact or similar names) - Toledo, Lucas County, OH USPTO Classifications: Tool Categories: 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: Granted: Feb. 07, 1933 Patent Pictures: CIPO Data Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hall Manufacturing Co.

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