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D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
D21F11/16—Making paper strips for spinning or twisting
FR1002368D1946-09-131946-09-13Procédé de fabrication de papiers, appareillages de mise en oeuvre et papiers obtenus à l'aide de ces appareillages
ExpiredFR1002368A
(fr)
Procédé permettant d'imposer une pré-contrainte à des éléments en béton, dispositifs destinés à la mise en oeuvre de ce procédé et éléments obtenus par cé procédé ou à l'aide de ces dispositifs