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US Patent: 139,487
Drill Gage
Patentee: Alvah C. Trafton (exact or similar names) - Worcester, MA USPTO Classifications: 33/201 Tool Categories: woodworking tools : hand drills : drill accessories layout tools : measurement gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: Joseph B. Gardiner Nathan B. Goodnow	Patent Dates: Applied: Mar. 10, 1873 Granted: Jun. 03, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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