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US Patent: 1,253,149
Drilling Tool Joint
Patentee: William Childers (exact or similar names) - Oilfields, CA USPTO Classifications: 279/99, 285/114, 285/148.6, 285/333, 285/90, 403/320, 403/334, 403/343 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: J. T. L. Wright D. B. Phillips	Patent Dates: Applied: Mar. 02, 1917 Granted: Jan. 08, 1918 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Victor J. Evans - patent attorney

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