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公开(公告)号：US3329905A
公开(公告)日：1967-07-04
申请号：US36911164
申请日：1964-05-21
Applicant: GEN DYNAMICS CORP
Inventor： FRANK NIERTIT , JACK SHIRMAN , SPANGENBERG EUGENE F
IPC: H04J3/14
CPC classification number: H04J3/14 , Y10T307/615
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