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Patent number:
Patent Date:
US Patent: 239,389
Polishing and grinding machine
Patentee:
David R. B. Kenyon (
exact
or
similar
names) - Providence, RI
USPTO Classifications:
384/253
,
451/361
,
474/113
Tool Categories:
metalworking machines
:
grinders
:
sharpening machines
:
bench or pedestal grinders
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
George H. Remington
Jonathan Cady
Patent Dates:
Applied:
Jan. 17, 1881
Granted:
Mar. 29, 1881
Patent Pictures:
USPTO
(New site tip)
Google Patents
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