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US Patent: 2,212,910
Micrometer gauge
Patentee: Eugene J. Witchger (exact or similar names) - Saginaw, MI USPTO Classifications: 33/817 Tool Categories: layout tools : measurement gauges Assignees: Lufkin Rule Company - Saginaw, MI Manufacturer: Lufkin Rule Company - Saginaw, MI Witnesses: Unknown	Patent Dates: Applied: Jan. 03, 1939 Granted: Aug. 27, 1940 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen American Precision Museum
Description: Known example in the American Precision Museum though it doesn't resemble the patent drawing (see picture).

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