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US Patent: 2,030,020
Chuck
Patentees:
William F. Groene (exact or similar names) - Cincinnati, OH
Walter R. Meyer (exact or similar names) - Cincinnati, OH

USPTO Classifications:
82/106, 82/109

Tool Categories:
metalworking machines : metal lathes : metal lathe chucks
metalworking machines : metal lathes : crankshaft lathes

Assignees:
R. K. Le Blond Machine Tool Co. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jan. 21, 1935
Granted: Feb. 04, 1936

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for R. K. Leblond Machine Tool Co.

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