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1.发明授权Method of and apparatus for melting or fusing glass, quartz, or ceramic materials into metal caps and similar metal articles 失效将玻璃，石英或陶瓷材料熔化或熔化成金属帽和类似金属制品的方法和设备
公开(公告)号：US1740443A
公开(公告)日：1929-12-24
申请号：US14213526
申请日：1926-10-16
Applicant: SIEMENSSCHUCKERTWERKE GMBH
Inventor： KARL DONAT
IPC: H01J5/26
CPC classification number: H01J5/26 , H01J2893/0041
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