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经营范围
发明名称
ELECTRICAL SIGNALLING SYSTEM
摘要
申请公布号
CA417944(A)
申请公布日期
1944.01.25
申请号
CAD417944
申请日期
申请人
AUTOMATIC TELEPHONE AND ELECTRIC COMPANY LIMITED
发明人
TESEO BRUNO DANTE TERRONI
分类号
主分类号
代理机构
代理人
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