-
公开(公告)号:US2994736A
公开(公告)日:1961-08-01
申请号:US70463257
申请日:1957-12-23
Applicant: IBM
Inventor: EMIL HOPNER , WOOD FREDERICK B , JOHNSON WALTER J
公开(公告)号:US2994736A
公开(公告)日:1961-08-01
申请号:US70463257
申请日:1957-12-23
Applicant: IBM
Inventor: EMIL HOPNER , WOOD FREDERICK B , JOHNSON WALTER J