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US Patent: 2,709,267
Precision tapping spindle
Patentees: Alfred P. Speckin (exact or similar names) - Cincinnati, OH James R. Bashor (exact or similar names) - Cincinnati, OH USPTO Classifications: 408/138, 408/140, 470/103 Tool Categories: metalworking machines : drilling and boring : tapping heads and chucks Assignees: United States Drill Head Co. - Cincinnati, OH Manufacturer: United States Drill Head Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: May 21, 1951 Granted: May 31, 1955 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for United States Drill Head Co.

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