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Priority to JP780971UpriorityCriticalpatent/JPS476044U/ja
Publication of JPS476044UpublicationCriticalpatent/JPS476044U/ja
C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
C03B17/04—Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles