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Patent number:
Patent Date:
US Patent: 449,217
Polishing Cone
Patentee:
Arthur T. Good (
exact
or
similar
names) - Hamilton, Butler County, OH
USPTO Classifications:
15/230
,
433/142
,
451/521
,
451/541
Tool Categories:
specialty machines
:
dental apparatus
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Nov. 06, 1886
Granted:
Mar. 31, 1891
Patent Pictures:
USPTO
(New site tip)
Google Patents
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