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经营范围
发明名称
HEARING-PROTECTIVE EAR PLUG
摘要
申请公布号
GB9117619(D0)
申请公布日期
1991.10.02
申请号
GB19910017619
申请日期
1991.08.15
申请人
WAAL HUBERTUS A DE
发明人
分类号
A61F11/08
主分类号
A61F11/08
代理机构
代理人
主权项
地址
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