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发明名称
EXPANDED TELEPHONE SYSTEM
摘要
申请公布号
JPS6436250(A)
申请公布日期
1989.02.07
申请号
JP19870192234
申请日期
1987.07.31
申请人
TOSHIBA CORP
发明人
SATO TAIJI;HORIUCHI TAKESHI
分类号
H04M1/00;H04M1/738;H04M11/00;H04Q3/58
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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