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发明名称
PUBLIC TELEPHONE DISORDER ANNOUNCEMENT SYSTEM
摘要
申请公布号
KR920001281(Y1)
申请公布日期
1992.02.20
申请号
KR19890007723U
申请日期
1989.06.02
申请人
CHO, HEUNG - RAE
发明人
CHO, HEUNG - RAE
分类号
H04M1/04;H04M17/00;(IPC1-7):H04M17/00
主分类号
H04M1/04
代理机构
代理人
主权项
地址
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