Patent search ap:("CSF") AND inv:"VELTE ANDRE J" Page 1

1.

发明授权
Indirectly heated cathode for valves operating on decimetric waves 失效
Title translation: 用于分压波动的阀的间接加热阴极

公开(公告)号：US2518121A

公开(公告)日：1950-08-08

申请号：US78143247

申请日：1947-10-22

Applicant: CSF

Inventor： PIERRE CAHOUR , VELTE ANDRE J

IPC: H01J1/20 , H01J21/08

CPC classification number: H01J1/20 , H01J21/08

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