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Publication of NL247683ApublicationCriticalpatent/NL247683A/xx
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
B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
B21C47/28—Drums or other coil-holders
B21C47/30—Drums or other coil-holders expansible or contractible
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Engineering & Computer Science
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Mechanical Engineering
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Storage Of Web-Like Or Filamentary Materials
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