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公开(公告)号：US1687088A
公开(公告)日：1928-10-09
申请号：US13758326
申请日：1926-09-24
Applicant: BBC BROWN BOVERI & CIE
Inventor： PLINIO FERRARI
IPC: B60L9/30
CPC classification number: B60L9/30 , B60L2200/26
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