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公开(公告)号:US2854121A
公开(公告)日:1958-09-30
申请号:US48017055
申请日:1955-01-06
Applicant: IBM
Inventor: YOUNG RICHARD J
IPC: B41J31/10
CPC classification number: B41J31/10
公开(公告)号:US2854121A
公开(公告)日:1958-09-30
申请号:US48017055
申请日:1955-01-06
Applicant: IBM
Inventor: YOUNG RICHARD J
IPC: B41J31/10
CPC classification number: B41J31/10