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Cable plow assembly
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Patent number 4,260,290
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Issue date Apr 7, 1981
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J. I. Case Company
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James S. Flippin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Subterranean plow blade
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Patent number 4,197,918
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Issue date Apr 15, 1980
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J. I. Case Company
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James S. Flippin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Cable plow assembly
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Patent number 4,140,425
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Issue date Feb 20, 1979
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J. I. Case Company
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James S. Flippin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Trencher with offset drive wheels
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Patent number 4,103,441
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Issue date Aug 1, 1978
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J. I. Case Company
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James Samuel Flippin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Vibratory cable laying plow
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Patent number 4,079,593
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Issue date Mar 21, 1978
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J. I. Case Company
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James S. Flippin
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING