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Patent number:
Patent Date:
US Patent: 521,206
Centering Tool
Patentee:
Frank B. Covel (
exact
or
similar
names) - Hartford, Hartford County, CT
USPTO Classifications:
408/112
,
408/84
Tool Categories:
metalworking machines
:
metal lathes
:
lathe tools
Assignees:
Dwight Slate Machine Co.
- Hartford, Hartford County, CT
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Sep. 05, 1893
Granted:
Jun. 12, 1894
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Dwight Slate Machine Co.
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