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公开(公告)号：US3029844A
公开(公告)日：1962-04-17
申请号：US81522059
申请日：1959-05-22
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： SIMMONDS WILLIAM H
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/0026
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公开(公告)号：US3182688A
公开(公告)日：1965-05-11
申请号：US19612362
申请日：1962-05-21
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： SIMMONDS WILLIAM H
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/0024
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