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发明名称
Fernmeldeschaltungsanordnung, die einen Ausgleichsübertrager umfasst.
摘要
申请公布号
CH143170(A)
申请公布日期
1930.10.31
申请号
CHD143170
申请日期
1929.10.21
申请人
BELL TELEPHONE MANUFACTURING CO.
发明人
CO. BELL TELEPHONE MANUFACTURING
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主分类号
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