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US Patent: 2,779,220
Universal Drilling Machine
Patentees: Raymond J. Dunn, Jr. (exact or similar names) - West Hartford, Hartford County, CT Oscar L. Wright, Jr. (exact or similar names) - Grandby, Hartford County, CT USPTO Classifications: 408/10, 408/13, 408/43, 408/71, 74/819, 74/822 Tool Categories: metalworking machines : drilling and boring : drill presses : multiple spindle drill presses Assignees: Hartford Special Machinery Co. - Hartford, Hartford County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 11, 1953 Granted: Jan. 29, 1957 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hartford Special Machinery Co.

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