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Sealing structure for the upper end of a rising or conveying...

E - Fixed Constructions – 21 – B
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Sealing system for a rotary rock bit

E - Fixed Constructions – 21 – B
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Sealing system for a rotary rock bit

E - Fixed Constructions – 21 – B
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Sealing system for a sealed bearing assembly used in earth...

E - Fixed Constructions – 21 – B
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Sealing system for a well bore in which a hot fluid is...

E - Fixed Constructions – 21 – B
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Sealing system for an earth boring cutter

E - Fixed Constructions – 21 – B
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Sealing system for underwater installation

E - Fixed Constructions – 21 – B
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Seat apparatus and method

E - Fixed Constructions – 21 – B
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Secondary and tertiary oil recovery process

E - Fixed Constructions – 21 – B
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Secondary cutting element for drill bit

E - Fixed Constructions – 21 – B
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Secondary cutting structure

E - Fixed Constructions – 21 – B
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Secondary lock for a downhole tool

E - Fixed Constructions – 21 – B
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Secondary oil recovery by self-propelled solvent extraction

E - Fixed Constructions – 21 – B
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Secondary oil recovery process

E - Fixed Constructions – 21 – B
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Secondary oil recovery process

E - Fixed Constructions – 21 – B
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Secondary oil recovery process

E - Fixed Constructions – 21 – B
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Secondary recovery by miscible vertical drive

E - Fixed Constructions – 21 – B
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Secondary recovery for steeply dipping reservoirs: combined...

E - Fixed Constructions – 21 – B
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Secondary recovery method

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Secondary recovery method

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