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经营范围
发明名称
PRIVATE BRANCH EXCHANGE
摘要
申请公布号
JPH04329746(A)
申请公布日期
1992.11.18
申请号
JP19910128359
申请日期
1991.05.01
申请人
CANON INC
发明人
NAGAMINE KAZUHIDE
分类号
H04M3/42;H04M3/54;H04M3/58;H04Q3/58
主分类号
H04M3/42
代理机构
代理人
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地址
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