Patent search ap:("CSF") AND inv:"WENER KLEEN" Page 1

1.

发明授权
Ultra-high frequency amplifying tube 失效
Title translation: 超高频放大管

公开(公告)号：US2794146A

公开(公告)日：1957-05-28

申请号：US14450250

申请日：1950-02-16

Applicant: CSF

Inventor： ROBERT WARNECKE , WENER KLEEN , HARRY HUBER , OSKAR DOHLER

IPC: H01J25/42 , H01J25/44 , H01J25/48

CPC classification number: H01J25/48 , H01J25/42 , H01J25/44

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