发明名称 |
Drilling system for use in elements of wood, concrete, stone or ceramic materials, has drill for cross section of any form, which in its extreme leads system of blades connected by articulated rods |
摘要 |
<p>The drilling system has a drill for a cross section of any form, which in its extreme leads a system of blades connected by articulated rods.</p> |
申请公布号 |
ES2301321(A1) |
申请公布日期 |
2008.06.16 |
申请号 |
ES20050003133 |
申请日期 |
2005.12.21 |
申请人 |
UNIVERSIDADE DA CORUNA, (JOSE MARIA BARJA PEREZ) |
发明人 |
ESTEVEZ CIMADEVILA JAVIER;MARTIN GUTIERREZ EMILIO;OTERO CHANS MARIA DOLORES |
分类号 |
E21B10/32 |
主分类号 |
E21B10/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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