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公开(公告)号：US2838320A
公开(公告)日：1958-06-10
申请号：US54966955
申请日：1955-11-29
Applicant: SOSALLA WILLIAM D
Inventor： SOSALLA WILLIAM D
CPC classification number: B62B1/10 , B62B2202/408 , B63H20/36 , Y10S280/02
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