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发明名称
DISCONNECTION DETECTION SYSTEM AND TELEPHONE EQUIPMENT
摘要
申请公布号
JPH06223290(A)
申请公布日期
1994.08.12
申请号
JP19930011054
申请日期
1993.01.26
申请人
ATSUMI DENKI KK
发明人
SUGIMOTO HITOSHI
分类号
G08B15/00;G08B29/02;G08B29/06;H04M1/24;H04M3/26;(IPC1-7):G08B29/02
主分类号
G08B15/00
代理机构
代理人
主权项
地址
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