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US Patent: 1,652,854
Micrometer Caliper
Patentee:
Phillip J. Darlington (exact or similar names) - Brookline, MA

USPTO Classifications:
33/501.4

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Apr. 14, 1927
Granted: Dec. 13, 1927

Patent Pictures:
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