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公开(公告)号：US2912860A
公开(公告)日：1959-11-17
申请号：US59768856
申请日：1956-07-13
Applicant: DIAMOND POWER SPECIALITY
Inventor： JOHN CARDNO
IPC: G01F23/02 , G01F23/292
CPC classification number: G01F23/02 , G01F23/2921
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