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发明名称
头部螺旋结构硬质合金截煤齿(蘑菇形)
摘要
后视图、左视图、右视图与主视图相同,省略后视图、左视图、右视图。
申请公布号
CN300838746D
申请公布日期
2008.10.15
申请号
CN200730070592.5
申请日期
2007.07.13
申请人
姚 勋
发明人
姚 勋
分类号
08-01
主分类号
08-01
代理机构
代理人
主权项
地址
412000湖南省株洲市荷塘区茨菇塘永红村5栋204号
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