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公开(公告)号：US2813237A
公开(公告)日：1957-11-12
申请号：US36826653
申请日：1953-07-16
Applicant: PHILLIPS PETROLEUM CO
Inventor： FIUEGEL DALE A , LUPFER DALE E
IPC: G01F1/68
CPC classification number: G01F1/68
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