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US Patent: 2,030,562
Metal Working Apparatus
Patentees:
John S. Barnes (deceased, estate of) (exact or similar names) - Rockford, Winnebago County, IL
Hope Barnes (executrix) (exact or similar names) - Rockford, Winnebago County, IL
Paul R. Guirl (exact or similar names) - Rockford, Winnebago County, IL

USPTO Classifications:
184/6.14, 82/130, 82/137

Tool Categories:
metalworking machines : pipe cutting machines

Assignees:
W. F. & John Barnes Co. - Rockford, Winnebago County, IL

Manufacturer:
Cincinnati Grinders, Inc. - Cincinnati, Hamilton County, OH

Witnesses:
none listed

Patent Dates:
Applied: Nov. 24, 1933
Granted: Feb. 11, 1936

Reissue Information:
Reissued as RE20,974 (Jan. 10, 1939)

Patent Pictures: [ 1 | 2 | 3 | 4 ]
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"Vintage Machinery" entry for W. F. & John Barnes Co.
Description:
The reissue of this patent was seen on a patent plate of a Cincinnati Cylindrical Grinder.

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