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US Patent: 2,180,289
Drilling and Honing Machinery
Patentees: Jack C. Carlton (exact or similar names) - Cincinnati, Hamilton County, OH Albert C. Spangenberg (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 29/26R, 408/133, 408/20 Tool Categories: metalworking machines : honing machines metalworking machines : drilling and boring : drill presses : radial drill presses Assignees: Carlton Machine Tool Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 25, 1938 Granted: Nov. 14, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Carlton Machine Tool Co.

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