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发明名称
KEY TELEPHONE SYSTEM
摘要
申请公布号
JPH04256268(A)
申请公布日期
1992.09.10
申请号
JP19910017643
申请日期
1991.02.08
申请人
CANON INC
发明人
NISHIKAWA SHIGERU
分类号
H04M1/02;H04M3/42;H04Q3/58
主分类号
H04M1/02
代理机构
代理人
主权项
地址
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