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US Patent: 161,447
Improvement in cutter-heads
Patentee:
Frederick Schwamb (exact or similar names) - Chicago, IL

USPTO Classifications:
144/225

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George Ferris
William H. Lotz
Patent Dates:
Applied: Feb. 07, 1873
Granted: Mar. 30, 1875

Patent Pictures:
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