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公开(公告)号：US2643345A
公开(公告)日：1953-06-23
申请号：US20464451
申请日：1951-01-05
Applicant: ASEA AB
Inventor： KNUT ALMSTROM , ERIC HEDSTROM SVEN , EINAR BRODERSEN
IPC: B60L11/02
CPC classification number: B60L11/02 , Y02T10/70 , Y02T10/7077
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