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发明名称
TELEPHONE EXCHANGE
摘要
申请公布号
JPH04150399(A)
申请公布日期
1992.05.22
申请号
JP19900272847
申请日期
1990.10.11
申请人
CANON INC
发明人
OUCHI MASATOMO
分类号
H04M1/00;H04M1/27;H04M1/60;H04Q3/58
主分类号
H04M1/00
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代理人
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