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Patent number:
Patent Date:
US Patent: 437,640
Grinding-machine
Patentee:
George W. Brown (
exact
or
similar
names) - Portland, ME
USPTO Classifications:
241/247
,
241/259.3
,
415/202
Tool Categories:
Assignees:
Belknap Motor Co.
- Portland, ME
Manufacturer:
Not known to have been produced
Witnesses:
Cecil E. Paine
Edwin L. Dyer
Patent Dates:
Applied:
Jul. 08, 1889
Granted:
Sep. 30, 1890
Patent Pictures:
USPTO
(New site tip)
Google Patents
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