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发明名称
Optical polarity indicator for magnetically recorded signals
摘要
申请公布号
US3181059(A)
申请公布日期
1965.04.27
申请号
US19610142442
申请日期
1961.10.02
申请人
MOHNKERN GERALD L
发明人
MOHNKERN GERALD L.
分类号
G06K7/08
主分类号
G06K7/08
代理机构
代理人
主权项
地址
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