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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA443405(A)
申请公布日期
1947.08.05
申请号
CAD443405
申请日期
申请人
AUTOMATIC TELEPHONE AND ELECTRIC COMPANY LIMITED
发明人
CHARLES EDMUND BEALE;CHARLES GILLINGS
分类号
主分类号
代理机构
代理人
主权项
地址
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