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发明名称
PRIVACY TELEPHONE SET FOR TWO-WIRE ANALOG LINE
摘要
申请公布号
JPH02276353(A)
申请公布日期
1990.11.13
申请号
JP19890097990
申请日期
1989.04.17
申请人
NEC CORP
发明人
MORIYA TOMOHIRO
分类号
H04M1/68
主分类号
H04M1/68
代理机构
代理人
主权项
地址
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