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US Patent: 144,354
Improvement in wood-grinders for paper-pulp
Patentees:
Marvin E. Otis (exact or similar names) - Rochester, NY
Marvin S. Otis (exact or similar names) - Rochester, NY

USPTO Classifications:
100/155R, 144/208.1, 241/151, 241/280

Tool Categories:
woodworking machines : specialty woodworking machines : wood grinding machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 18, 1873
Granted: Nov. 04, 1873

Patent Pictures:
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