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发明名称
Schaltungsanordnung zur Pfeifverhinderung fuer Lautfernsprechanlagen
摘要
申请公布号
DE1273586(B)
申请公布日期
1968.07.25
申请号
DE196400S3486
申请日期
1964.09.30
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
FORDAN DIPL.-ING. GUENTER;LUEDER REINHARD
分类号
H04M9/08;H04M9/10
主分类号
H04M9/08
代理机构
代理人
主权项
地址
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