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US Patent: 2,511,050
Dual welder
Patentee: Ulysses S. Dunn (exact or similar names) - Milwaukee, WI USPTO Classifications: 219/86.51, 219/86.61, 336/119, 336/20 Tool Categories: metalworking machines : welding machines trade specific : welder Assignees: None Manufacturer: Rockwell Mfg. Co. - Pittsburgh, PA Witnesses: Unknown	Patent Dates: Applied: Mar. 24, 1947 Granted: Jun. 13, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.
Description: This patent number was listed in a 1965 catalog of machinery from Rockwell Mfg. Co.

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