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Patent number:
Patent Date:
US Patent: 465,478
Grinding Machine
Patentee:
Allen Johnston (
exact
or
similar
names) - Ottumwa, Wapello County, IA
USPTO Classifications:
29/DIG.101
,
29/DIG.71
,
451/273
,
451/387
Tool Categories:
knives and cutters
:
sharpening apparatus
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 06, 1891
Granted:
Dec. 22, 1891
Patent Pictures:
USPTO
(New site tip)
Google Patents
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