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US Patent: 993,366
Planer-knife sharpener
Patentees:
Frank Willard Converse (exact or similar names) - Beloit, WI
William Harper (exact or similar names) - Beloit, WI

USPTO Classifications:
144/130.2

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. S. Olson
Laura Ross
L. M. Randall
Earl L. Karstaedt

Patent Dates:
Applied: Sep. 19, 1908
Granted: May 30, 1911

Patent Pictures: [ 1 | 2 ]
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Vintage Machinery entry for P. B. Yates Machine Co.
Vintage Machinery entry for Berlin Machine Works

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