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发明名称
TELEPHONE NOISE SUPPRESSION SYSTEM
摘要
申请公布号
CA346814(A)
申请公布日期
1934.12.18
申请号
CAD346814
申请日期
申请人
AKTIENGESELLSCHAFT BROWN
发明人
EDOUARD AUBORT
分类号
主分类号
代理机构
代理人
主权项
地址
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