Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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
B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/10—Making tubes with seams being neither welded nor soldered, e.g. riveted seams
B21C37/102—Making tubes with seams being neither welded nor soldered, e.g. riveted seams of coated strip material; Making multi-wall tubes
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Engineering & Computer Science
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Mechanical Engineering
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Application Of Or Painting With Fluid Materials
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Verfahren zur Herstellung eines metallischen Verbundkörpers mit einem Grundmetall aus Eisen oder einer Eisenlegierung und einem davon unterschiedlichen Plattiermetall
Verfahren, Bleche, Baender, Draehte usw. aus unreinem Aluminium oder Aluminiumlegierungen gegen chemische Angriffe und Witterungseinfluesse widerstandsfaehig zu machen
Verfahren und Vorrichtung zur Herstellung von hohlen, metallenen Besteckgriffen mit geschlossenem Boden, ohne Naht und feuerfester Füllung zur Aufnahme der Angel.