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Note: Patents: 11/18/1952, U.S. Patent # 2,618,233, Machine for making tubing on continuously rotating arbors. 11/09/1954, U.S. Patent # 2,693,779, Machine for making round flexible metal tubes. 02/28/1956, U.S. Patent # 2,736,285, Machine for making noncircular tubing with helically wound strip. 12/04/1956, U.S. Patent # 2,772,646, Making and compressing corrugated flexible hose in one operation.
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