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Patent number:
Patent Date:
US Patent: 230,611
Stamp-mill
Patentee:
John C. Butterfield (
exact
or
similar
names) - Chicago, IL
USPTO Classifications:
173/148
,
173/210
,
241/271
,
241/60
,
241/74
,
74/581
,
91/39
Tool Categories:
specialty machines
:
ore processing apparatus
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
N. B. Smith
R. D. O. Smith
Patent Dates:
Applied:
Oct. 23, 1879
Granted:
Aug. 03, 1880
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
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