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发明名称
CALL CONNECTION TIME MEASURING INSTRUMENT FOR DISTRIBUTED TYPE ELECTRONIC AUTOMATIC EXCHANGE
摘要
申请公布号
JPH02137453(A)
申请公布日期
1990.05.25
申请号
JP19880290084
申请日期
1988.11.18
申请人
NEC CORP
发明人
TAKEMOTO KAZUO
分类号
H04M3/22
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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