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公开(公告)号：US3006991A
公开(公告)日：1961-10-31
申请号：US84410659
申请日：1959-10-02
Applicant: NAT RES DEV
Inventor： COLIN CHERRY EDWARD , GODSON HOLLOWAY DENNIS , BIRENDRA PRASADA
CPC classification number: H04B1/66 , H04N7/12 , H04N19/587 , H04N19/59
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