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发明名称
Schaltungsanordnung zur Betriebsguetebeobachtung von Fernsprechleitungen
摘要
申请公布号
DE1159039(B)
申请公布日期
1963.12.12
申请号
DE1962S079143
申请日期
1962.04.24
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
GRANDJEAN DIPL.-PHYS. HANS-NORBERT
分类号
H04M3/30
主分类号
H04M3/30
代理机构
代理人
主权项
地址
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