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发明名称
Composition et procédé de fabrication d'éléments magnétiques
摘要
申请公布号
FR1143063(A)
申请公布日期
1957.09.26
申请号
FRD1143063
申请日期
1955.10.11
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
C04B35/26
主分类号
C04B35/26
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代理人
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