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Patent number:
Patent Date:
CA Patent: CA-209,318
Worm Grinder
Meule a vis Tangente
Patentee:
William F. Zimmermann (
exact
or
similar
names) - New York, NY
USPTO Classifications:
Tool Categories:
metalworking machines
:
grinders
:
gear grinding machines
Assignees:
Cincinnati Grinder Co.
- Cincinnati, Hamilton County, OH
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
May 17, 1920
Granted:
Mar. 08, 1921
Patent Pictures:
CIPO Data
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cincinnati Grinders, Inc.
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