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公开(公告)号：US2389271A
公开(公告)日：1945-11-20
申请号：US39891041
申请日：1941-06-20
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： EMMANUEL MOUROMTSEFF ILIA , DINNICK GEORGE M
IPC: H01J19/80
CPC classification number: H01J19/80
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