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3792538
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Patent number 3,792,538
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Issue date Feb 19, 1974
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3680321
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Patent number 3,680,321
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3673808
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Patent number 3,673,808
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3591936
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Patent number 3,591,936
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Issue date Jul 13, 1971
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3393524
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Patent number 3,393,524
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Issue date Jul 23, 1968
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3283516
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Patent number 3,283,516
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Issue date Nov 8, 1966
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3230721
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Patent number 3,230,721
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Issue date Jan 25, 1966
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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3218739
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Patent number 3,218,739
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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B60 - VEHICLES IN GENERAL