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1.发明授权
公开(公告)号：US2539426A
公开(公告)日：1951-01-30
申请号：US1119648
申请日：1948-02-26
Applicant: INT STANDARD ELECTRIC CORP
Inventor： BULOW JACOBSEN BENT , HOLLY ROCHE ALLEMAN , FRANK BALY WILFRED
IPC: H04B3/10
CPC classification number: H04B3/10
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