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发明名称
Door chime mechanism
摘要
申请公布号
GB842869(A)
申请公布日期
1960.07.27
申请号
GB19560018830
申请日期
1956.06.18
申请人
MURRAY TALL
发明人
分类号
G10K1/07
主分类号
G10K1/07
代理机构
代理人
主权项
地址
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