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US Patent: 75,411
Improvement in grinder for knives for planers
Patentee:
John Grant - Northampton, MA

USPTO Classifications:
451/421

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. F. Hyde
Edward H. Hyde

Patent Dates:
Granted: Mar. 10, 1868

Patent Pictures:
USPTO pdf tiff
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