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Patent number:
Patent Date:
US Patent: 486,810
Automatic Indicating Calipers
Patentee:
John W. Porter (
exact
or
similar
names) - Waukesha, Waukesha County, WI
USPTO Classifications:
33/651
Tool Categories:
metalworking tools
:
machinist tools
:
measuring tools
:
indicating calipers
Assignees:
Jame McNaughton
- Waukesha, Waukesha County, WI
Manufacturer:
Not known to have been produced
Witnesses:
C. E. Armin
Abbie M. Peabody
Patent Dates:
Applied:
Aug. 15, 1892
Granted:
Nov. 22, 1892
Patent Pictures:
USPTO
(New site tip)
Google Patents
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