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发明名称
STAENDER FUER EINE SPRECHSTELLE EINER WECHSEL-, GEGEN- ODER LAUTSPRECHANLAGE
摘要
申请公布号
DE2400439(B2)
申请公布日期
1977.02.03
申请号
DE19742400439
申请日期
1974.01.05
申请人
发明人
分类号
H04R1/08;(IPC1-7):H04M1/11
主分类号
H04R1/08
代理机构
代理人
主权项
地址
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