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经营范围
发明名称
Improvements in or relating to telephone instruments
摘要
申请公布号
GB782436(A)
申请公布日期
1957.09.04
申请号
GB19540036768
申请日期
1954.12.20
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;CHARLES CLARKE PUCKETTE, JNR.;ALAN KELL
发明人
分类号
H04M1/22
主分类号
H04M1/22
代理机构
代理人
主权项
地址
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