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公开(公告)号：US3234967A
公开(公告)日：1966-02-15
申请号：US28658663
申请日：1963-06-10
Applicant: SPECIALTIES DEV CORP
Inventor： MUNN ALFRED J , POOLE JR HARMON A
IPC: F16K11/06
CPC classification number: F16K11/06 , Y10T137/86855
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