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公开(公告)号：US2486267A
公开(公告)日：1949-10-25
申请号：US59729745
申请日：1945-06-02
Applicant: DULINSKY ROSS E
Inventor： DULINSKY ROSS E
IPC: H04R1/10
CPC classification number: H04R5/0335 , H04R1/1008 , H04R1/1058
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