by use of highly pressurised liquid

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CPC
E21C45/04

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EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C45/00Methods of hydraulic mining Hydraulic monitors

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E21C45/04by use of highly pressurised liquid

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Patents Grantslast 30 patents

Information Patent Grant
Hyper-pressure pulse excavator
- Patent number 9,057,262
- Issue date Jun 16, 2015
- Tempress Technologies, Inc.
- Jack J. Kolle
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Borehole Mining System and Methods Using Sonic-Pulsed Jetting Excav...
- Publication number 20160084083
- Publication date Mar 24, 2016
- Gilbert Alan Hice
- E21 - EARTH DRILLING MINING
Information Patent Application
Hyper-Pressure Pulse Excavator
- Publication number 20140028078
- Publication date Jan 30, 2014
- Tempress Technologies, Inc.
- Jack J. Kolle
- E21 - EARTH DRILLING MINING