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US Patent: 1,511,255
Micrometer
Patentee:
Joseph E. Barker (exact or similar names) - Denver, CO

USPTO Classifications:
33/821, 33/827

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Aug. 07, 1922
Granted: Oct. 14, 1924

Patent Pictures:
USPTO (New site tip)
Google Patents
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Description:
A. G. O'Brien - patent attorney

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