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发明名称
ABRASION RESISTANT MAGNETIC RECORD MEMBERS
摘要
申请公布号
GB1524562(A)
申请公布日期
1978.09.13
申请号
GB19750034625
申请日期
1975.08.20
申请人
POLY DISC SYSTEMS INC
发明人
分类号
G11B5/66;G11B5/708;G11B5/72;(IPC1-7):C23C3/02;C25D5/12
主分类号
G11B5/66
代理机构
代理人
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地址
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