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公开(公告)号：US3320455A
公开(公告)日：1967-05-16
申请号：US54443166
申请日：1966-04-22
Applicant: GEN ELECTRIC
Inventor： REY WHETTEN NATHAN , HOUSTON JOHN M
IPC: H01J41/04
CPC classification number: H01J41/04
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