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经营范围
发明名称
Magnetic digital recorder
摘要
申请公布号
US3271777(A)
申请公布日期
1966.09.06
申请号
US19610152452
申请日期
1961.11.15
申请人
UNITED GAS CORPORATION
发明人
DAVIS JOHN R.
分类号
G06K1/12;G11B5/09;G11B20/18
主分类号
G06K1/12
代理机构
代理人
主权项
地址
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