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US Patent: 6,858
File-supporter
Patentees:
Benjamin M. Townsend - Quincy, IL
Jerome B. Woodruff - Washington, DC

USPTO Classifications:
76/31

Tool Categories:
metalworking machines : grinders : sharpening machines : saw sharpening machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. S. Renwick
William D. Washington

Patent Dates:
Granted: Nov. 06, 1849

Patent Pictures:
USPTO pdf tiff
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