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经营范围
发明名称
Improvements in or relating to mechanical vibratory devices
摘要
申请公布号
GB601629(A)
申请公布日期
1948.05.10
申请号
GB19450025076
申请日期
1945.09.27
申请人
THE BRUSH DEVELOPMENT COMPANY
发明人
分类号
H04R17/02
主分类号
H04R17/02
代理机构
代理人
主权项
地址
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