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发明名称
Improvements in telephone or like systems
摘要
申请公布号
GB581679(A)
申请公布日期
1946.10.21
申请号
GB19450010079
申请日期
1945.04.21
申请人
AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;CHARLES GILLINGS;CHARLES EDMUND BEALE
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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