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公开(公告)号：US3315680A
公开(公告)日：1967-04-25
申请号：US46440865
申请日：1965-06-16
Applicant: OPTICS TECHNOLOGY INC
Inventor： NORMAN SILBERTRUST , PEPPERS NORMAN A
IPC: A61F9/008
CPC classification number: A61F9/00821 , A61F9/008 , A61F2009/00863
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