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发明名称
Preparation of magnetic records including the use of photographic techniques
摘要
申请公布号
US3275438(A)
申请公布日期
1966.09.27
申请号
US19650433195
申请日期
1965.02.16
申请人
SIMON LEVIN
发明人
LEVIN SIMON
分类号
G11B5/74
主分类号
G11B5/74
代理机构
代理人
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