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公开(公告)号:DE2458807A1
公开(公告)日:1975-07-31
申请号:DE2458807
申请日:1974-12-12
Applicant: IBM
Inventor: CHARSKY RONALD STEPHEN , CONN GILBERT EUGENE , FLAMHOLZ ALEXANDER LEON , YOUNG HAROLD JAMES
IPC: G01B11/02 , G01B11/08 , G01B11/14 , G03F7/20 , G01B11/00