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Patent number:
Patent Date:
US Patent: 457,079
Machine for grinding mower-knives
Patentee:
Rufus Dutton (
exact
or
similar
names) - New York, NY
USPTO Classifications:
451/122
,
451/294
Tool Categories:
agricultural
:
sharpeners
metalworking machines
:
grinders
:
sharpening machines
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Bernard J. Isecke
John G. Agar
Patent Dates:
Applied:
Nov. 10, 1890
Granted:
Aug. 04, 1891
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Description:
Improvements to patents
342,290
,
359,964
, and
395,615
.
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