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Vibratory plow
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Patent number 4,909,332
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Issue date Mar 20, 1990
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J. I. Case Company
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Edgar K. Lindstrom
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Vibratory plow
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Patent number 4,909,333
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Issue date Mar 20, 1990
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J. I. Case Company
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Edgar K. Lindstrom
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Digging boom assembly
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Patent number 4,742,627
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Issue date May 10, 1988
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J. I. Case Company
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Edgar K. Lindstrom
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Ground drive control
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Patent number 4,346,617
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Issue date Aug 31, 1982
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J. I. Case Company
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Philip W. Schroeder
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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