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公开(公告)号：US2367299A
公开(公告)日：1945-01-16
申请号：US43413442
申请日：1942-03-10
Applicant: INT STANDARD ELECTRIC CORP
Inventor： MCLARN ERNEST S , LEIBE FRANK A
IPC: G08B5/30
CPC classification number: G08B5/30
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