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发明名称
COIN TELEPHONE CIRCUIT FOR DIAL-TONE-FIRST SERVICE
摘要
申请公布号
CA867457(A)
申请公布日期
1971.03.30
申请号
CAD867457
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
JOHN E. EDINGTON;MERVILLE L. WARNOCK
分类号
主分类号
代理机构
代理人
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