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US Patent: 1,541,796
Micrometer Caliper
Patentee:
Phillip J. Darlington (exact or similar names) - Boston, MA

USPTO Classifications:
33/501.2

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Feb. 08, 1922
Granted: Jun. 16, 1925

Patent Pictures:
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