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公开(公告)号：US2821706A
公开(公告)日：1958-01-28
申请号：US45489954
申请日：1954-09-09
Applicant: GLENN L MARTIN CO
Inventor： REIS HERBERT J , FOLEY WILLIAM V
IPC: H01Q1/28
CPC classification number: H01Q1/282
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