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发明名称
RING TRIP CIRCUIT
摘要
申请公布号
JPH04223745(A)
申请公布日期
1992.08.13
申请号
JP19900406443
申请日期
1990.12.26
申请人
FUJITSU LTD
发明人
WATAI TAKAHIRO;FUNAKI TETSUJI
分类号
H04M3/02
主分类号
H04M3/02
代理机构
代理人
主权项
地址
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