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经营范围
发明名称
Improvements in telephone apparatus
摘要
申请公布号
GB362421(A)
申请公布日期
1931.11.30
申请号
GB19300016728
申请日期
1930.05.30
申请人
AURELIO LERROUX
发明人
分类号
H04M1/15
主分类号
H04M1/15
代理机构
代理人
主权项
地址
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