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发明名称
TIME DIVISION EXCHANGE DEVICE
摘要
申请公布号
JPH04223750(A)
申请公布日期
1992.08.13
申请号
JP19900414507
申请日期
1990.12.26
申请人
CANON INC
发明人
MIZUTANI KOICHI
分类号
H04M3/56;H04Q3/52;H04Q11/04
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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