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公开(公告)号：US3171506A
公开(公告)日：1965-03-02
申请号：US32523163
申请日：1963-11-21
Applicant: DANFOSS AS
Inventor： THERKEL HALD
IPC: F04B39/00
CPC classification number: F04B39/0055 , F04B39/0072 , Y10S181/403
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