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GB Patent: GB-407,186
Improvements in Valve Seat Grinding Tools
Patentee:
Hall Mfg. Co. (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:
Applied: Feb. 28, 1933
Granted: Mar. 15, 1934

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

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