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发明名称
Sprechkapsel fuer Fernsprechapparate
摘要
申请公布号
DE1537724(A1)
申请公布日期
1970.01.08
申请号
DE19671537724
申请日期
1967.12.15
申请人
TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT MBH
发明人
VOLKER RIEMANN,DIPL.-PHYS.;SEMMLER,GUENTER;ULF STRAEHLE,DIPL.-PHYS.
分类号
H04M1/60
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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