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公开(公告)号：US3473222A
公开(公告)日：1969-10-21
申请号：US3473222D
申请日：1968-05-31
Applicant: LYNN C KESTER
Inventor： KESTER LYNN C
CPC classification number: A61C8/0018 , A61C8/0039 , A61C8/0048
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