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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
CA328891(A)
申请公布日期
1932.12.27
申请号
CAD328891
申请日期
申请人
LA SOCIETE NOUVELLE DE CONSTRUCTIONS TELEPHONIQUES "BREVETS TCHOUBRITCH- DERVAL"
发明人
MICHAEL TCHOUBRITCH
分类号
主分类号
代理机构
代理人
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地址
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