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Pressure operated isolation valve for use in a well testing...

E - Fixed Constructions – 21 – B
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Pressure operated safety valve with lock means

E - Fixed Constructions – 21 – B
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Pressure operated safety valve with lock means

E - Fixed Constructions – 21 – B
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Pressure operated test tool

E - Fixed Constructions – 21 – B
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Pressure operated test valve

E - Fixed Constructions – 21 – B
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Pressure orienting swivel

E - Fixed Constructions – 21 – B
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Pressure pad

E - Fixed Constructions – 21 – F
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Pressure pulse attenuator

E - Fixed Constructions – 21 – B
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Pressure pulse detection apparatus incorporating noise...

E - Fixed Constructions – 21 – B
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Pressure pulse generator

E - Fixed Constructions – 21 – B
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Pressure pulse generator for downhole tool

E - Fixed Constructions – 21 – B
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Pressure pulse generator for measurement-while-drilling...

E - Fixed Constructions – 21 – B
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Pressure pulse generator for mwd

E - Fixed Constructions – 21 – B
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Pressure regulating valve

E - Fixed Constructions – 21 – B
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Pressure relief device for drill bit lubrication system

E - Fixed Constructions – 21 – B
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Pressure relief nozzles

E - Fixed Constructions – 21 – B
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Pressure relief system for live well snubbing

E - Fixed Constructions – 21 – B
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Pressure relieving transition joint

E - Fixed Constructions – 21 – B
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Pressure responsive explosion initiator with time delay and...

E - Fixed Constructions – 21 – B
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Pressure responsive shut off valve

E - Fixed Constructions – 21 – B
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