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发明名称
KEY TELEPHONE SYSTEM
摘要
申请公布号
JPH0583362(A)
申请公布日期
1993.04.02
申请号
JP19910266966
申请日期
1991.09.19
申请人
RICOH CO LTD
发明人
WATANABE HIDEHIKO;MINAGAWA HIROYUKI
分类号
H04M3/00;H04M11/00;H04Q3/58
主分类号
H04M3/00
代理机构
代理人
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