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2019
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Invention
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A tunnel boring apparatus, a tunnel boring machine, and a method of boring tunnels. The present i... |
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2016
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Invention
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Well casing and well casing system and method.
A well casing system (10) for installation in a w... |
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Invention
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Well casing and well casing system and method. A well casing system (10) for installation in a we... |
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Invention
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Multi fluid drilling system. A multi-fluid drilling system 10 drilling is disclosed for drilling ... |
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Invention
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Multi fluid drilling system. A multi-fluid drilling system (10) drilling is disclosed for drillin... |
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2015
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Invention
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Dual circulation drilling system. A ground drill system 10 has a drill string 14 which forms firs... |
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Invention
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Dual circulation fluid hammer drilling system. A dual circulation fluid hammer drilling system (1... |
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Invention
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Drill rig and associated drill rig traverse system. A drill rig 10 has a drill tower 12, rotation... |
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Invention
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Multi-ram drill rig and method of operation. c are selected to operate when drilling to a third g... |
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2013
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Invention
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Dual circulation drilling system. A ground drill system (10) has a drill string 14 which forms fi... |
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2010
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Invention
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Multi-ram drill rig and method of operation. c) are selected to operate when drilling to a third ... |
