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发明名称
沙漏计时器
摘要
申请公布号
CN3630714D
申请公布日期
2007.04.11
申请号
CN200630152361.4
申请日期
2006.05.29
申请人
赞生五金塑胶制品厂有限公司
发明人
叶国威
分类号
10-03
主分类号
10-03
代理机构
北京润平知识产权代理有限公司
代理人
周建秋
主权项
地址
香港九龙新蒲岗双喜街十七号富德工业大厦十九楼B室
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