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US Patent: 3,456,893
Expanding mandrel assembly
Patentee: Anatol Michelson (exact or similar names) - Morton, PA USPTO Classifications: 242/573.7, 242/576 Tool Categories: metalworking machines : sheet metal Assignees: E. W. Bliss Co. - Canton, OH Manufacturer: E. W. Bliss Co. - Brooklyn, NY Witnesses: Unknown	Patent Dates: Applied: Dec. 15, 1967 Granted: Jul. 22, 1969 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for E. W. Bliss Co.

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