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公开(公告)号:CA936910A
公开(公告)日:1973-11-13
申请号:CA71474
申请日:1970-01-06
Applicant: IBM
Inventor: KRUSPE H , MOTT W
IPC: G03B27/62 , G03G15/04
公开(公告)号:SE351932B
公开(公告)日:1972-12-11
申请号:SE111170
申请日:1970-01-29
IPC: G03B27/62 , G03G15/04 , G03G15/00