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公开(公告)号：US2689167A
公开(公告)日：1954-09-14
申请号：US10822649
申请日：1949-08-02
Applicant: GEN ELECTRIC CO LTD
Inventor： MARSHALL DOVEY DOUGLAS , CLARK CHIRNSIDE RALPH , PERCY ROOKSBY HAROLD
CPC classification number: G11B5/70652 , C01G49/06 , C01P2004/52 , C01P2004/62 , Y10T428/29
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