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Liner hanger with brass packer
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Patent number 4,619,326
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Issue date Oct 28, 1986
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Shell California Production Inc.
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Franciscus J. A. van Mierlo
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E21 - EARTH DRILLING MINING
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NO.sub.x reduction in flue gas
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Patent number 4,521,388
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Issue date Jun 4, 1985
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Shell California Production Inc.
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Norman C. Samish
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Steam distribution manifold
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Patent number 4,505,297
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Issue date Mar 19, 1985
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Shell California Production Inc.
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Charles A. Leech
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F22 - STEAM GENERATION
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Once-through steam generator
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Patent number 4,474,011
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Issue date Oct 2, 1984
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Shell California Production Inc.
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Arthur W. Nelson
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E21 - EARTH DRILLING MINING