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公开(公告)号：US2825110A
公开(公告)日：1958-03-04
申请号：US55774256
申请日：1956-01-06
Applicant: GLENN L MARTIN CO
Inventor： VERGA FRANK A
CPC classification number: H01Q1/285 , F16G11/12 , H01Q1/16 , Y10T24/45461
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