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Patent number:
Patent Date:
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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