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US Patent: 1,300,692
Screw Thread Micrometer
Patentee:
Lowell C. Blomstrom (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:
33/818, 33/829

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 07, 1918
Granted: Apr. 15, 1919

Patent Pictures:
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