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Patent number:
Patent Date:
US Patent: 408,876
Grinding Tool
Patentee:
Henry J. Distin (
exact
or
similar
names) - Philadelphia, PA
USPTO Classifications:
451/504
,
451/547
,
451/559
Tool Categories:
metalworking machines
:
grinders
:
internal grinders
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jun. 06, 1888
Granted:
Aug. 13, 1889
Patent Pictures:
USPTO
(New site tip)
Google Patents
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