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发明名称
Improvements in telephone or like systems
摘要
申请公布号
GB563504(A)
申请公布日期
1944.08.17
申请号
GB19430002401
申请日期
1943.02.13
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
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地址
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