阀控直动型破岩截齿
- Disigner of the Invention:姬会福,杜长龙,cuixinxia,蔡卫民,高魁东,孟德远
- Type of Patent:国内
- State of Patent:专利授权
- Application Number:201410172857.1
- Number of Inventors:7
- Service Invention or Not:no
- Application Date:2014-04-25
- Authorization Date:2015-12-09
- First Author:LIU Songyong
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