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Levallois-Perret, FR
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last 30 patents
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Patent Grant
Heat-treatment device and process
Patent number
5,989,647
Issue date
Nov 23, 1999
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Ge...
Francis Remy
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...