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公开(公告)号：US3010490A
公开(公告)日：1961-11-28
申请号：US74910158
申请日：1958-07-17
Applicant: SYLVANIA ELECTRIC PROD
Inventor： GARTNER STANLEY J , LEAP ROY J , SANKER GERALD F
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/0026
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