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US Patent: 1,763,941
Micrometer caliper
Patentee:
Eugene J. Witchger (exact or similar names) - Saginaw, MI

USPTO Classifications:
33/816

Tool Categories:
layout tools : measurement gauges

Assignees:
Lufkin Rule Company - Saginaw, MI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 09, 1928
Granted: Jun. 17, 1930

Patent Pictures:
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