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公开(公告)号:US2484114A
公开(公告)日:1949-10-11
申请号:US68407646
申请日:1946-07-16
Applicant: IBM
Inventor: PAGE RALPH E , BEATTIE HORACE S , DALY GEORGE F
CPC classification number: G06K7/06
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32.
公开(公告)号:US2438071A
公开(公告)日:1948-03-16
申请号:US56944444
申请日:1944-12-23
Applicant: IBM
Inventor: PAGE RALPH E , BEATTIE HORACE S
CPC classification number: B41J1/42
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公开(公告)号:US2413884A
公开(公告)日:1947-01-07
申请号:US60385245
申请日:1945-07-09
Applicant: IBM
Inventor: PAGE RALPH E
CPC classification number: B26D7/22 , Y10T83/626 , Y10T83/8743
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公开(公告)号:US2174705A
公开(公告)日:1939-10-03
申请号:US19801838
申请日:1938-03-25
Applicant: IBM
Inventor: PAGE RALPH E
CPC classification number: F16H35/02 , Y10T74/19555
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公开(公告)号:US2013543A
公开(公告)日:1935-09-03
申请号:US73380734
申请日:1934-07-05
Applicant: IBM
Inventor: PAGE RALPH E
IPC: G06K13/04
CPC classification number: G06K13/04
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