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公开(公告)号：US3162836A
公开(公告)日：1964-12-22
申请号：US11377261
申请日：1961-05-31
Applicant: ADRIANUS VEREUGDENHII
Inventor： ADRIANUS VEREUGDENHII
CPC classification number: G08G3/02 , B60Q1/2615 , B63B45/00 , B63B45/04 , B63B49/00 , B63B2201/08
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