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公开(公告)号：US3458826A
公开(公告)日：1969-07-29
申请号：US3458826D
申请日：1967-05-23
Applicant: CIT ALCATEL
Inventor： LALANDE JEAN F , SICHEL ALFRED
CPC classification number: H03G3/3042 , H03F1/345
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