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US Patent: 2,150,621
Pilot for Valve Seat Facing Tools
Patentee:
Ernest A. Hall (exact or similar names) - Toledo, Lucas County, OH

USPTO Classifications:
24/62

Tool Categories:
specialty tools : valve reseating tools
trade specific : vehicle repairer : vehicle mechanic : valve and seat maintenance
specialty tools : valve grinding tools

Assignees:
Hall Manufacturing Co. - Toledo, Lucas County, OH

Manufacturer:
Hall Manufacturing Co. - Toledo, Lucas County, OH

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 03, 1938
Granted: Mar. 14, 1939

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Hall Manufacturing Co.

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