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Jetting pig
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Patent number 5,875,803
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Issue date Mar 2, 1999
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Shell Oil Company
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Alan Dale Leitko
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B08 - CLEANING
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Subsea pipeline recovery clamp
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Patent number 5,188,483
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Issue date Feb 23, 1993
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Shell Oil Company
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Frans Kopp
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Reduced J-tube pull force
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Patent number 4,755,081
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Issue date Jul 5, 1988
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Shell Oil Company
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Joe O. Esparza
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E21 - EARTH DRILLING MINING
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Reduced J-tube pull force
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Patent number 4,702,647
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Issue date Oct 27, 1987
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Shell Oil Company
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Joe O. Esparza
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E21 - EARTH DRILLING MINING
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Reduced J tube pull force
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Patent number 4,688,966
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Issue date Aug 25, 1987
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Shell Oil Company
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Joe O. Esparza
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E21 - EARTH DRILLING MINING
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Flame cutting template
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Patent number 4,653,195
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Issue date Mar 31, 1987
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Joe O. Esparza
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Pipeline gel plug
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Patent number 4,383,783
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Issue date May 17, 1983
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Shell Oil Company
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Vitold R. Kruka
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B08 - CLEANING