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US Patent: 1,419,837
Micrometer Calipers
Patentee:
Louis Flachkampf (exact or similar names) - Lost Creek #2, Schuylkill County, PA

USPTO Classifications:
33/709, 33/826

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 26, 1918
Granted: Jun. 13, 1922

Patent Pictures:
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