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T U J O SA
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T U J O SA
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Publication of FR973356ApublicationCriticalpatent/FR973356A/fr
B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
B28B21/00—Methods or machines specially adapted for the production of tubular articles
B28B21/86—Cores
B28B21/88—Cores adjustable, collapsible or expansible
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Engineering & Computer Science
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Manufacturing & Machinery
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Chemical & Material Sciences
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Ceramic Engineering
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Mechanical Engineering
(AREA)
FR973356D1948-10-081948-10-08Procédé pour la fabrication sur place de canalisations en béton et dispositif pour la mise en oeuvre de ce procédé
ExpiredFR973356A
(fr)