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发明名称
ELECTRIC PULSE-SIGNALLING SYSTEMS
摘要
申请公布号
CA497004(A)
申请公布日期
1953.10.20
申请号
CAD497004
申请日期
申请人
THE GENERAL ELECTRIC COMPANY
发明人
MAURICE M. LEVY
分类号
主分类号
代理机构
代理人
主权项
地址
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