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US Patent: 1,867,527
Process for Anodic Removal of Surface Metal Film
Patentee: Thomas E. Dunn (exact or similar names) - Bridgeport, CT USPTO Classifications: 148/253, 148/261, 205/217, 205/316, 205/320, 205/333, 205/87 Tool Categories: Assignees: Bullard Co. - Bridgeport, CT Manufacturer: Bullard Co. - Bridgeport, CT Witnesses: Unknown	Patent Dates: Applied: Apr. 15, 1930 Granted: Jul. 12, 1932 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens Vintage Machinery entry for Bullard Machine Tool Co.

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