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US Patent: 7,536
Arrangement of pressure and feed rollers in planing-machines
Patentees:
Charles A. Spring (exact or similar names) - Kensington, PA
Peter Boon (exact or similar names) - Kensington, PA

USPTO Classifications:
144/114.1, 144/117.2, 144/144.1

Tool Categories:
woodworking machines : cutter head machines : wood planers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John Laws
Joseph Dunott
Patent Dates:
Granted: Jul. 30, 1850

Reissue Information:
Reissued as RE209 (Jan. 13, 1852)

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