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US Patent: 1,840,231
Grinding Machine
Patentees:
Robert E. W. Harrison (exact or similar names) - Cincinnati, OH
Fred S. Haas (exact or similar names) - Cincinnati, OH

USPTO Classifications:
173/19, 451/125, 451/144, 451/157, 451/239, 451/24, 451/427, 82/137, 82/19, 91/275, 91/37

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. 28, 1927
Granted: Jan. 05, 1932

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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