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Werner Demny
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Dusseldorf-Oberkassel, DT
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last 30 patents
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Patent Grant
Process and rolling mill for stretch reduction of tubes
Patent number
4,086,800
Issue date
May 2, 1978
Friedrich Kocks GmbH & Co.
Werner Demny
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...