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公开(公告)号：US3536133A
公开(公告)日：1970-10-27
申请号：US3536133D
申请日：1968-05-01
Applicant: ASEA AB
Inventor： MATTSSON HUGO , MELLGREN GUNNAR
IPC: H01L23/473 , H01L25/03 , F28F7/00 , H01L1/12
CPC classification number: H01L23/473 , H01L25/03 , H01L2924/0002 , Y10S257/909 , H01L2924/00
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