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Patent number:
Patent Date:
US Patent: 344,777
Automatic Metal Grinding Machine
Patentee:
George M. Griswold (
exact
or
similar
names) - New Haven, New Haven County, CT
USPTO Classifications:
125/11.01
,
451/246
,
451/334
Tool Categories:
metalworking machines
:
grinders
:
cylindrical grinders
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Feb. 23, 1886
Granted:
Jun. 29, 1886
Patent Pictures:
USPTO
(New site tip)
Google Patents
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