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US Patent: 441,634
Polishing-machine
Patentees:
Anson P. Boardman (exact or similar names) - Watertown, WI
Joseph B. Bennett (exact or similar names) - Watertown, WI

USPTO Classifications:
451/164, 451/65

Tool Categories:

Assignees:
Berlin Machine Works - Beloit, WI

Manufacturer:
Berlin Machine Works - Beloit, WI

Witnesses:
E. C. Beynom
C. B. Skinner

Patent Dates:
Applied: Apr. 22, 1889
Granted: Dec. 02, 1890

Patent Pictures:
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Vintage Machinery entry for Berlin Machine Works

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