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US Patent: 1,315,318
Micrometer Gage
Patentees: Walter Maddison, deceased (Estate of) (exact or similar names) - London, Middlesex County, England Sarah E. Maddison, Administratrix (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: May 19, 1919 Granted: Sep. 09, 1919 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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