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发明名称
Interphone system
摘要
申请公布号
GB9504035(D0)
申请公布日期
1995.04.19
申请号
GB19950004035
申请日期
1995.02.28
申请人
CHEN, JHY P
发明人
分类号
H04N7/18
主分类号
H04N7/18
代理机构
代理人
主权项
地址
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