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公开(公告)号：US2412442A
公开(公告)日：1946-12-10
申请号：US49308443
申请日：1943-07-01
Applicant: GEN ELECTRIC
Inventor： CREVER FREDERICK E , CALDER LEONARD C
IPC: H02P9/36
CPC classification number: H02P9/36
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