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公开(公告)号：US3029835A
公开(公告)日：1962-04-17
申请号：US2967960
申请日：1960-05-17
Applicant: SEALOL CORP
Inventor： BIELLO STEPHEN J , HERMAN LINDEBOOM
IPC: F16K15/06
CPC classification number: F16K15/063 , Y10T137/7856 , Y10T137/7868 , Y10T137/7929
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