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发明名称
MODULATOR/DEMODULATOR FOR EXCHANGE LINE
摘要
申请公布号
JPH04183051(A)
申请公布日期
1992.06.30
申请号
JP19900311459
申请日期
1990.11.19
申请人
TOSHIBA CORP
发明人
NAKAYAMA YOSHIKI
分类号
H04L29/10;H04M3/00;H04Q3/58
主分类号
H04L29/10
代理机构
代理人
主权项
地址
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