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公开(公告)号：US3493665A
公开(公告)日：1970-02-03
申请号：US3493665D
申请日：1967-08-15
Applicant: WEBB JAMES E , NASA
Inventor： DAVIDS LEONARD H , RIBARICH JOHN J
CPC classification number: B64G7/00 , B64G2700/00
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