4. E - Fixed Constructions
  5. 21
  6. B

Concentric gas lift valves

E - Fixed Constructions – 21 – B

Patent

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Details

166/44

E21B 43/12 (2006.01)

Patent

CA 825989

Abercrombie Bolling A.

E - Fixed Constructions – 21 – B
Inventor

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Mcmurry Everett D.

E - Fixed Constructions – 21 – B
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Mcmurry Oil Tool Specialties

E - Fixed Constructions – 21 – B
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G - Physics – 21 – G
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