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发明名称
Telephonteilnehmerstation mit einem Mikrophonverstärker und Rückhördämpfung
摘要
申请公布号
CH343466(A)
申请公布日期
1959.12.31
申请号
CHD343466
申请日期
1956.04.19
申请人
AUTOPHON AKTIENGESELLSCHAFT
发明人
分类号
H04M1/58
主分类号
H04M1/58
代理机构
代理人
主权项
地址
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