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发明名称
MULTIPLE SIGNALLING SYSTEM
摘要
申请公布号
CA316828(A)
申请公布日期
1931.11.03
申请号
CAD316828
申请日期
申请人
THE WIRED RADIO
发明人
CLINTON W. HOUGH
分类号
主分类号
代理机构
代理人
主权项
地址
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