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经营范围
发明名称
ELECTRICAL TIME BASE CIRCUIT
摘要
申请公布号
CA391537(A)
申请公布日期
1940.09.24
申请号
CAD391537
申请日期
申请人
CANADIAN MARCONI COMPANY
发明人
ROLAND JOHN KEMP
分类号
主分类号
代理机构
代理人
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地址
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