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经营范围
发明名称
Improvements in or relating to impulse transmitting arrangements for use in telephone systems
摘要
申请公布号
GB414301(A)
申请公布日期
1934.08.02
申请号
GB19340003256
申请日期
1934.01.31
申请人
PILADE GIORDANO
发明人
分类号
H04M1/274
主分类号
H04M1/274
代理机构
代理人
主权项
地址
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