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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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