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发明名称
RING TRIP CIRCUIT
摘要
申请公布号
JPH01290353(A)
申请公布日期
1989.11.22
申请号
JP19880120857
申请日期
1988.05.18
申请人
FUJITSU LTD
发明人
ITO SHINICHI;IKETANI YOZO;YAMAMOTO YUZO
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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