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Scraper bowl-lift apparatus
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Patent number 4,142,309
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Issue date Mar 6, 1979
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Caterpillar Tractor Co.
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Carroll R. Cole
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Motor grader circle drive
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Patent number 4,122,903
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Issue date Oct 31, 1978
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Caterpillar Tractor Co.
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Carroll R. Cole
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Bowl and ejector apparatus
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Patent number 4,084,335
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Issue date Apr 18, 1978
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Caterpillar Tractor Co.
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Carroll R. Cole
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Draw bar for a motor grader
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Patent number 4,064,947
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Issue date Dec 27, 1977
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Caterpillar Tractor Co.
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Carroll Richard Cole
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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