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公开(公告)号：US3391942A
公开(公告)日：1968-07-09
申请号：US48803565
申请日：1965-09-17
Applicant: SEALOL
Inventor： JAMES WILSON FRANCIS
IPC: F16J15/36
CPC classification number: F16J15/36 , Y10S277/925
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