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公开(公告)号:CA511598A
公开(公告)日:1955-04-05
申请号:CA511598D
Applicant: IBM
Inventor: LUHN HANS P , JOHNSON RICHARD L
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公开(公告)号:CA492642A
公开(公告)日:1953-05-05
申请号:CA492642D
Applicant: IBM
Inventor: DEAN KENNETH W , AMBROSIO BIAGIO F , LUHN HANS P
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