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公开(公告)号:US2955756A
公开(公告)日:1960-10-11
申请号:US55206655
申请日:1955-12-09
Applicant: IBM
Inventor: JENSEN ROBERT A
IPC: G06F11/10
CPC classification number: G06F11/104
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公开(公告)号:US3302170A
公开(公告)日:1967-01-31
申请号:US36314764
申请日:1964-04-28
Applicant: IBM
Inventor: JENSEN ROBERT A , LEVINE WILBUR J
IPC: G08G1/081
CPC classification number: G08G1/081
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