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SOCIETE ANONYME DITE: VALLOUREC, A FRENCH CORP
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75116 - PARIS, FR
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Patents Grants
last 30 patents
Information
Patent Grant
Joint for pipe intended for petroleum industry
Patent number
4,373,750
Issue date
Feb 15, 1983
Societe Anonyme dite: Vallourec
Jean Mantelle
E21 - EARTH DRILLING MINING
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Patent Grant
Turning mechanism for the movement of ladles in steel mills
Patent number
3,942,650
Issue date
Mar 9, 1976
Societe Anonyme dite: VALLOUREC (Usines a tubes de Lorraine-Escaut et Vallour...
Pierre Peytavin
B22 - CASTING POWDER METALLURGY