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发明名称
TELEPHONE VOICE CIRCUIT NET
摘要
申请公布号
JPH0417438(A)
申请公布日期
1992.01.22
申请号
JP19900290632
申请日期
1990.10.26
申请人
IND TECHNOL RES INST
发明人
DAA CHIYANGU YUANGU
分类号
H04M1/00;H04M1/26;H04M1/30;H04M1/31;H04M1/50;H04M1/58;H04M1/60
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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