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发明名称
The talking door bell
摘要
申请公布号
GB9516440(D0)
申请公布日期
1995.10.11
申请号
GB19950016440
申请日期
1995.08.10
申请人
SIMONS, JOHN S
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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