Latest Inventions, Goods, Services
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2019
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G/S
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Machines and equipment for oil processing and refinement, namely, oil well pumping machines; oil ... |
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2012
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G/S
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Oil exploitation and refining equipment; oil rigs; slurry
pumps for the petroleum industry; oil ... |
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2011
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Invention
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Rotary lock block type drilling riser connector. A rotary lock block type drilling riser connecto... |
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2008
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G/S
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Machines and equipment for oil processing and refinement;
oil drilling machines; sludge pumps sp... |
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G/S
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Mineworking machines, namely, dust collectors for mining, electrical industrial controls for conv... |
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2007
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Invention
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Cooling device for interior and exterior surfaces of a mud pump liner. A cooling device for inter... |
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