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公开(公告)号：US2740038A
公开(公告)日：1956-03-27
申请号：US31155552
申请日：1952-09-25
Applicant: JOHN CARRIE
Inventor： JOHN CARRIE
IPC: B63B45/00
CPC classification number: B63B45/00 , B63B45/02 , B63B2201/08
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