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发明名称
Platten mit magnetisierbarer Schicht und ihre Herstellung
摘要
申请公布号
DE1003468(B)
申请公布日期
1957.02.28
申请号
DE1955I010100
申请日期
1955.04.16
申请人
IBM DEUTSCHLAND INTERNATIONALE BUERO-MASCHINEN GESELLSCHAFT M.B.H.
发明人
HAGOPIAN JACOB JOHN
分类号
G11B5/68
主分类号
G11B5/68
代理机构
代理人
主权项
地址
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