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公开(公告)号：US3371220A
公开(公告)日：1968-02-27
申请号：US58945266
申请日：1966-10-25
Applicant: BELL TELEPHONE LABOR INC
Inventor： FLEURY V PAUL A , PATEL CHANDRA K N , SLUSHER RICHART E , WOLFF PETER A
IPC: G02F1/39
CPC classification number: G02F1/39
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