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发明名称
AUTOMATIC TELECOMMUNICATION EXCHANGES
摘要
申请公布号
CA518783(A)
申请公布日期
1955.11.22
申请号
CAD518783
申请日期
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
ESMOND P. G. WRIGHT;JOSEPH RICE
分类号
主分类号
代理机构
代理人
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