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发明名称
Pruefanordnung fuer Fernmelde-Zweiwegsysteme
摘要
申请公布号
DE826600(C)
申请公布日期
1952.01.03
申请号
DE1950S003089
申请日期
1950.05.03
申请人
SOCIETE ANONYME DE TELECOMMUNICATIONS
发明人
分类号
H04B3/46
主分类号
H04B3/46
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