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公开(公告)号:US2484084A
公开(公告)日:1949-10-11
申请号:US63109545
申请日:1945-11-27
Applicant: IBM
Inventor: FITCH CLYDE J , EICHORN ROBERT N
公开(公告)号:US2484084A
公开(公告)日:1949-10-11
申请号:US63109545
申请日:1945-11-27
Applicant: IBM
Inventor: FITCH CLYDE J , EICHORN ROBERT N