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经营范围
发明名称
TELEPHONE SIGNALING REPEATER
摘要
申请公布号
CA761547(A)
申请公布日期
1967.06.20
申请号
CAD761547
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
HENRY H. ABBOTT
分类号
主分类号
代理机构
代理人
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