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公开(公告)号:US2997361A
公开(公告)日:1961-08-22
申请号:US74457158
申请日:1958-06-25
Applicant: IBM
Inventor: CHRISTOPHERSON WARREN A , TIDBALL LLOYD C
IPC: G03G15/32
CPC classification number: G03G15/325 , Y10S101/37
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公开(公告)号:US3092823A
公开(公告)日:1963-06-04
申请号:US72597858
申请日:1958-04-02
Applicant: IBM
Inventor: MARTIN HAROLD F , TIDBALL LLOYD C , GODDARD WILLIAM A
IPC: G06F3/08
CPC classification number: G06F3/08
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