4. Wells
  5. Automatic

Gray Tool Company

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Control line tubing hanger

Wells – Valves – closures or changeable restrictors
Patent

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Densification of metal powder to produce cladding of valve inter

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Making composite or hollow article
Patent

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Fail-safe valve actuator

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Fire resistant connections and double ribbed sealing means there

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Fire resistant connections and dovetail-like sealing means there

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Profile ID: LFUS-PAI-P-174593

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