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经营范围
发明名称
TELEPHONE EXCHANGE
摘要
申请公布号
JPH04242361(A)
申请公布日期
1992.08.31
申请号
JP19910003247
申请日期
1991.01.16
申请人
CANON INC
发明人
TANIGAWA YOSHIHIRO
分类号
H04M3/42;H04Q3/58
主分类号
H04M3/42
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