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经营范围
发明名称
MAGNETIC RECORDING, REPRODUCING OR ERASING HEAD
摘要
申请公布号
CA549906(A)
申请公布日期
1957.12.10
申请号
CAD549906
申请日期
申请人
CANADIAN GENERAL ELECTRIC COMPANY
发明人
HAROLD W. LORD
分类号
主分类号
代理机构
代理人
主权项
地址
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