-
公开(公告)号:US3007144A
公开(公告)日:1961-10-31
申请号:US58470556
申请日:1956-05-14
Applicant: IBM
Inventor: HAGOPIAN JACOB J
IPC: G11B5/55 , G11B5/596 , G11B17/038 , G11B17/26 , G11B21/08
CPC classification number: G11B5/5521 , G11B5/5547 , G11B5/59611 , G11B17/038 , G11B17/26 , G11B21/081
-
-
公开(公告)号:US2913246A
公开(公告)日:1959-11-17
申请号:US42410654
申请日:1954-04-19
Applicant: IBM
Inventor: HAGOPIAN JACOB J
IPC: G11B5/82
CPC classification number: G11B5/82
-
公开(公告)号:US3174140A
公开(公告)日:1965-03-16
申请号:US82434759
申请日:1959-07-01
Applicant: IBM
Inventor: HAGOPIAN JACOB J , SUPERNOWICZ EDWARD J
-
公开(公告)号:US2950672A
公开(公告)日:1960-08-30
申请号:US70204257
申请日:1957-12-11
Applicant: IBM
Inventor: HAGOPIAN JACOB J
IPC: B41K3/10
CPC classification number: B41K3/10
-
-
公开(公告)号:US3275995A
公开(公告)日:1966-09-27
申请号:US33254263
申请日:1963-12-23
Applicant: IBM
Inventor: HAGOPIAN JACOB J
-
公开(公告)号:US2920379A
公开(公告)日:1960-01-12
申请号:US62075856
申请日:1956-11-06
Applicant: IBM
Inventor: HAGOPIAN JACOB J
CPC classification number: G11B5/17 , G11B5/10 , G11B5/11 , G11B5/1278 , G11B5/187 , Y10T29/49066
-
公开(公告)号:US3437074A
公开(公告)日:1969-04-08
申请号:US3437074D
申请日:1964-12-21
Applicant: IBM
Inventor: HAGOPIAN JACOB J , STEELE WILLIAM E
CPC classification number: G03G15/09
-
-
-
-
-
-
-
-
-