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发明名称
LOUD-SPEAKING COMMUNICATION DEVICE
摘要
申请公布号
SU1239889(A1)
申请公布日期
1986.06.23
申请号
SU19843774266
申请日期
1984.07.25
申请人
EREMIN IVAN P
发明人
EREMIN IVAN P,SU
分类号
H04M9/08
主分类号
H04M9/08
代理机构
代理人
主权项
地址
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