-
-
公开(公告)号:US3418520A
公开(公告)日:1968-12-24
申请号:US60355666
申请日:1966-12-21
申请人: IBM
IPC分类号: G11B7/09 , G11C13/04 , H01J29/52 , H01J29/82 , H01J37/04 , H01J37/09 , H01J37/21 , H01J37/244 , H01J37/304
CPC分类号: H01J37/304 , G11B7/0917 , G11C13/04 , G11C13/048 , H01J29/52 , H01J29/82 , H01J37/04 , H01J37/09 , H01J37/21 , H01J37/244
-