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Patent number:
Patent Date:
US Patent: 1,512,823
Micrometer Caliper
Patentee:
Philip J. Darlington (
exact
or
similar
names) - Boston, Suffolk County, MA
USPTO Classifications:
33/501
,
33/818
Tool Categories:
metalworking tools
:
machinist tools
:
measuring tools
:
micrometers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
May 04, 1922
Granted:
Oct. 21, 1924
Patent Pictures:
USPTO
(New site tip)
Google Patents
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