Patent search ap:("WESTINGHOUSE ELECTRIC CORP") AND inv:"JOHN PAWLISHEN" Page 1

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发明授权
Electron discharge device 失效

公开(公告)号：US2495289A

公开(公告)日：1950-01-24

申请号：US50996243

申请日：1943-11-12

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： RIGROD WILLIAM W , JOHN PAWLISHEN

IPC: H01J25/12 , H01J25/24

CPC classification number: H01J25/24 , H01J25/12

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