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US Patent: 27,221
Machine for grinding and polishing saws
Patentee:
Charles W. Hubbard (exact or similar names) - Pittsburgh, PA

USPTO Classifications:
451/218, 451/258, 76/35

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Martin G. Cushing
W. Bakewell
Patent Dates:
Granted: Feb. 21, 1860

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Jeff Joslin
Description:
Witness William Bakewell was a prominent Pittsburgh patent attorney who handled most Pittsburgh inventions.

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