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公开(公告)号：US2846026A
公开(公告)日：1958-08-05
申请号：US61313556
申请日：1956-10-01
Applicant: ASEA AB
Inventor： ERIC GOTT , BERTIL ULFWARD
IPC: B66B1/52
CPC classification number: B66B1/52
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