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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA429950(A)
申请公布日期
1945.09.11
申请号
CAD429950
申请日期
申请人
ASSOCIATED TELEPHONE AND TELEGRAPH COMPANY;AUTOMATIC ELECTRIC LABORATORIES
发明人
IMRE MOLNAR
分类号
主分类号
代理机构
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