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发明名称
PREVIOUS ARRANGEMENT TELEPHONE SWITCHING SYSTEM
摘要
申请公布号
JPH03148949(A)
申请公布日期
1991.06.25
申请号
JP19890286284
申请日期
1989.11.02
申请人
NEC ENG LTD
发明人
ISODA HAJIME
分类号
H04M11/00
主分类号
H04M11/00
代理机构
代理人
主权项
地址
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