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US Patent: 60,787
Improvement in planing-machines
Tonguing and grooving cutterhead
Patentee:
Seneca M. Richardson - Worcester, MA

USPTO Classifications:
144/243, 144/253.1, 144/253.2, 144/90.1

Tool Categories:
woodworking machines : machine and tool cutters : cutterheads

Assignees:
None

Manufacturer:
Witherby, Rugg & Richardson - Worcester, MA

Witnesses:
D. L. Miller
Thomas H. Dodge

Patent Dates:
Granted: Jan. 01, 1867

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Witherby, Rugg & Richardson
Description:
A 1905 catalog of Cowan & Co. features "The Cowan Patent Matching Heads, with the Richardson Patent Cutters". The Cowan patent head is seen in patent CA-49,432.

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