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公开(公告)号：US3532415A
公开(公告)日：1970-10-06
申请号：US3532415D
申请日：1968-01-16
Applicant: SOPELEM
Inventor： BALUTEAU JEAN MICHEL , ROSIER RAYMOND
IPC: G02B15/14
CPC classification number: G02B15/14
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