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1.发明授权Non-magnetic metal mounting frame for pick-up tube targets for preventing microphony 失效用于防止麦克风的拾音管目标的非磁性金属安装框架
公开(公告)号：US3309552A
公开(公告)日：1967-03-14
申请号：US27759963
申请日：1963-05-02
Applicant: EMI LTD
IPC: H01J29/02
CPC classification number: H01J29/026
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