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US Patent: 1,323,707
Micrometer
Patentee:
Jay A. Mackey (exact or similar names) - Lynn, MA

USPTO Classifications:
33/823

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

Assignees:
Jay A. Mackey - Lynn, MA
Thomas C. Rowen - Swampscott, MA

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Mar. 03, 1917
Granted: Dec. 02, 1919

Patent Pictures:
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Description:
Clyde H. Rodgers - patent attorney

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