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发明名称
Verfahren zur Herstellung von Vakuumroehren mit Metallkolben
摘要
申请公布号
DE929015(C)
申请公布日期
1955.06.16
申请号
DE1952T007177
申请日期
1952.12.23
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
SCHAFFERNICHT WALTER DR.
分类号
C03C27/04
主分类号
C03C27/04
代理机构
代理人
主权项
地址
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