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US Patent: 856,726
Cutter-head-knife sharpener
Patentee:
Harry B. Ross - Beloit, WI

USPTO Classifications:
144/114.1, 451/421

Tool Categories:
woodworking machines : woodworking machine parts or accessories : woodworking machine sharpening mechanisms

Assignees:
None

Manufacturer:
P. B. Yates Machine Co. - Beloit, WI
Berlin Machine Works - Beloit, WI

Witnesses:
L. F. McCrea
C. C. Linthricum

Patent Dates:
Applied: Jan. 17, 1906
Granted: Jun. 11, 1907

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for P. B. Yates Machine Co.
"Vintage Machinery" entry for Berlin Machine Works

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