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经营范围
发明名称
DIAL PULSE DETECTION SYSTEM
摘要
申请公布号
JPH0294762(A)
申请公布日期
1990.04.05
申请号
JP19880246037
申请日期
1988.09.29
申请人
NEC CORP
发明人
FUKUI AKIRA
分类号
H04M1/00;H04L25/03;H04M11/00;H04Q1/32
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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