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1.发明授权Push-button type fluid logic element for fluid control,indicating or recording system 失效用于流体控制，指示或记录系统的按钮式液体流体元件
公开(公告)号：US3550620A
公开(公告)日：1970-12-29
申请号：US3550620D
申请日：1968-11-06
Applicant: HITACHI LTD
Inventor： HASEGAWA HIKARU
CPC classification number: F15C3/00 , F16K11/00 , Y10T137/86582 , Y10T137/87201
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