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Tube clamp
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Patent number 4,215,880
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Issue date Aug 5, 1980
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Caterpillar Tractor Co.
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Jack H. Trittipoe
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Scraper pull-hook assembly
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Patent number 4,167,274
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Issue date Sep 11, 1979
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Caterpillar Tractor Co.
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Jack H. Trittipoe
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Bail for push-pull scraper
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Patent number 4,078,820
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Issue date Mar 14, 1978
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Caterpillar Tractor Co.
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Jack H. Trittipoe
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B60 - VEHICLES IN GENERAL
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Roller mounting
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Patent number 4,011,670
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Issue date Mar 15, 1977
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Caterpillar Tractor Co.
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James P. Hutchings
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING