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Method for pipeline installation
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Patent number 6,179,523
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Issue date Jan 30, 2001
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Shell Oil Company
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Carl Gottlieb Langner
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Subsea wellhead connections
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Patent number 5,320,175
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Issue date Jun 14, 1994
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Shell Oil Company
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Paul B. Ritter
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E21 - EARTH DRILLING MINING
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Seismic float recovery system
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Patent number 4,798,158
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Issue date Jan 17, 1989
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Shell Oil Company
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Carl G. Langner
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Flowline connection means
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Patent number 4,671,702
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Issue date Jun 9, 1987
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Shell Oil Company
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Carl G. Langner
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E21 - EARTH DRILLING MINING
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Flowline connection means
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Patent number 4,620,818
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Issue date Nov 4, 1986
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Shell Oil Company
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Carl G. Langner
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E21 - EARTH DRILLING MINING
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Flowline connection means
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Patent number 4,615,646
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Issue date Oct 7, 1986
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Shell Oil Company
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Carl G. Langner
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E21 - EARTH DRILLING MINING
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Pipeline trenching
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Patent number 4,615,645
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Issue date Oct 7, 1986
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Shell Oil Company
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Carl G. Langner
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Subsea pipeline connection
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Patent number 4,588,326
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Issue date May 13, 1986
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Shell Oil Company
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Carl G. Langner
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E21 - EARTH DRILLING MINING
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Subsea pipeline connection
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Patent number 4,558,972
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Issue date Dec 17, 1985
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Shell Oil Company
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Carl G. Langner
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E21 - EARTH DRILLING MINING
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Subsea pipeline connection
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Patent number 4,541,753
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Issue date Sep 17, 1985
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Shell Oil Company
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Carl G. Langner
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E21 - EARTH DRILLING MINING
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Articulated pipe discharge ramp
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Patent number 4,472,079
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Issue date Sep 18, 1984
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Shell Oil Company
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Carl G. Langner
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...