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US Patent: 2,042,257
Machine Tool
Patentees:
Robert E. W. Harrison (exact or similar names) - Cincinnati, OH
Cecil W. Hopkins (exact or similar names) - Cincinnati, OH

USPTO Classifications:
193/31R, 33/792, 38/1C, 409/133, 451/1, 451/17, 451/19, 451/242, 451/245, 451/6, 451/64, 81/57.4, 82/137

Tool Categories:
metalworking machines : grinding machines

Assignees:
Cincinnati Grinders, Inc. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 30, 1931
Granted: May 26, 1936

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cincinnati Grinders, Inc.

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