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公开(公告)号：US3375172A
公开(公告)日：1968-03-26
申请号：US54754166
申请日：1966-05-04
Applicant: ASEA AB
Inventor： RAGNAR MANSSON , HARALD SKAR
IPC: G21C3/33
CPC classification number: G21C3/3315 , G21C3/3305 , Y02E30/40
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