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US Patent: 1,111,030
Micrometer Gage
Patentee: William O'Brien (exact or similar names) - London, Middlesex County, England USPTO Classifications: 33/818 Tool Categories: metalworking tools : machinist tools : measuring tools : micrometers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 26, 1912 Granted: Sep. 22, 1914 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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