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Pile repair apparatus
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Patent number 10,246,845
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Issue date Apr 2, 2019
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4D TECH SOLUTIONS, INC.
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Bradley G. Deroos
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Pile repair clamp
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Patent number 9,903,085
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Issue date Feb 27, 2018
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4D TECH SOLUTIONS, INC.
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Bradley G. Deroos
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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High mobility vehicle
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Patent number 7,475,745
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Issue date Jan 13, 2009
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Bradley G. DeRoos
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS