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Publication of FR384155ApublicationCriticalpatent/FR384155A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C45/00—Separating mandrels from work or vice versa
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Engineering & Computer Science
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Mechanical Engineering
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FR384155D1907-06-261907-11-19Procédé pour la fabrication de tiges ou barres métalliques laminées creuses
ExpiredFR384155A
(fr)