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经营范围
发明名称
D CHANNEL MONITOR
摘要
申请公布号
GB9000645(D0)
申请公布日期
1990.07.11
申请号
GB19900000645
申请日期
1990.01.05
申请人
HARRIS CORPORATION
发明人
分类号
H04M3/22;H04J3/12;H04J3/16;H04L29/14;H04Q11/04
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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