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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
B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
B28B21/62—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements circumferential laterally tensioned
B28B21/64—Winding arrangements
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FR577515D1924-02-211924-02-21Perfectionnements dans les tuyaux de conduites et conduites d'eau ou autres liquides ou fluides
ExpiredFR577515A
(fr)
Perfectionnements dans les appareils mesureurs et indicateurs de la densité de l'eau dans une chaudière à vapeur, ou la densité d'autres liquides dans les installations évaporatoires