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US Patent: 2,572,455
Transformer Transformer for arc welding
Patentee: Ulysses S. Dunn (exact or similar names) - Chicago, IL USPTO Classifications: 336/119, 336/133, 336/136, 336/45 Tool Categories: metalworking machines : welding machines trade specific : welder Assignees: None Manufacturer: Rockwell Mfg. Co. - Pittsburgh, PA Witnesses: Unknown	Patent Dates: Applied: Oct. 22, 1949 Granted: Oct. 23, 1951 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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