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经营范围
发明名称
INDIVIDUAL TELEPHONE NUMBER SYSTEM
摘要
申请公布号
JPH02172357(A)
申请公布日期
1990.07.03
申请号
JP19880325779
申请日期
1988.12.26
申请人
HITACHI LTD
发明人
MIZUHARA NOBORU;AZEYANAGI MIKISUKE
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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