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公开(公告)号：US3084341A
公开(公告)日：1963-04-02
申请号：US75210058
申请日：1958-07-30
Applicant: LAB FOR ELECTRONICS INC
Inventor： CHARLES HIEKEN
IPC: G01S13/60
CPC classification number: G01S13/60
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公开(公告)号：US2936444A
公开(公告)日：1960-05-10
申请号：US60022056
申请日：1956-07-26
Applicant: LAB FOR ELECTRONICS INC
Inventor： CHARLES HIEKEN
IPC: G11B20/14
CPC classification number: G11B20/1492
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