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US Patent: 1,285,476
Calender Roll Grinder
Patentees:
William A. Underwood (exact or similar names) - Worcester, MA
John Zimmerman (exact or similar names) - Auburn, MA

USPTO Classifications:
451/425

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. F. Wesson
Patent Dates:
Applied: Jan. 26, 1918
Granted: Nov. 19, 1918

Patent Pictures:
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