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Method and device for press-forming sheet metal
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Patent number 4,833,903
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Issue date May 30, 1989
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Union Siderurgique du Nord et de L'est de la France (Usinor)
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Gabriel de Smet
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Coal gasification installation
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Patent number 4,775,392
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Issue date Oct 4, 1988
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Union Siderurgique du Nord et de L'est de la France (Usinor)
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Jean Cordier
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Machine for treating metal sheets
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Patent number 4,209,345
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Issue date Jun 24, 1980
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Union Siderurgique Dunord et de l'Est de la France (USINOR)
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Alfred M. J. Germain
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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