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Hermann Leitner
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Langenfeld, DE
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last 30 patents
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Patent Grant
Skew rolling mill for reducing solid and hollow cross-sections
Patent number
4,395,895
Issue date
Aug 2, 1983
SMS Schloemann-Siemag Aktiengesellschaft
Erich Bretschneider
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Grant
Rolling mill
Patent number
4,210,011
Issue date
Jul 1, 1980
Schloemann-Siemag Aktiengesellschaft
Erich Bretschneider
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...