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Patent number:
Patent Date:
US Patent: 242,308
Apparatus for grinding wood pulp
Patentee:
Thomas Hanvey (
exact
or
similar
names) - Rochester, NY
USPTO Classifications:
241/279
,
241/280
Tool Categories:
manufacturing
:
manufacturing processes
:
manufacturing paper
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Chauncey Perry
R. F. Osgood
Patent Dates:
Applied:
Mar. 17, 1880
Granted:
May 31, 1881
Patent Pictures:
USPTO
(New site tip)
Google Patents
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