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公开(公告)号:US3514645A
公开(公告)日:1970-05-26
申请号:US3514645D
申请日:1968-05-24
Applicant: LOUIS RICHARD
Inventor: RICHARD LOUIS
IPC: H01J41/18 , H02K44/00 , H02N4/00
CPC classification number: H01J41/18 , H02K44/00