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发明名称
TELEPHONE EXCHANGE
摘要
申请公布号
JPH0435147(A)
申请公布日期
1992.02.05
申请号
JP19900136161
申请日期
1990.05.25
申请人
CANON INC
发明人
HIROKI SHIGERU
分类号
H04M3/42;H04M3/533
主分类号
H04M3/42
代理机构
代理人
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