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发明名称
RECORDING AND REPRODUCING HEADS FOR WIRE RECORDERS
摘要
申请公布号
CA460231(A)
申请公布日期
1949.10.11
申请号
CAD460231
申请日期
申请人
ARMOUR RESEARCH FOUNDATION
发明人
MARVIN CAMRAS
分类号
主分类号
代理机构
代理人
主权项
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