-
公开(公告)号:US3543263A
公开(公告)日:1970-11-24
申请号:US3543263D
申请日:1967-12-06
申请人: CARD KEY SYSTEMS INC
CPC分类号: H01J17/491 , G09F9/313 , H01J17/44 , H01J2893/0068
公开(公告)号:US3543263A
公开(公告)日:1970-11-24
申请号:US3543263D
申请日:1967-12-06
申请人: CARD KEY SYSTEMS INC
CPC分类号: H01J17/491 , G09F9/313 , H01J17/44 , H01J2893/0068