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

David F. Laurel

E - Fixed Constructions – 21 – B

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Country: United States Of America

Ball drop head with rotating rings

E - Fixed Constructions – 21 – B
Patent

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Flow actuated valve for use in a wellbore

E - Fixed Constructions – 21 – B
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Inflation packer method and apparatus

E - Fixed Constructions – 21 – B
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Method and multi-purpose apparatus for control of fluid in...

E - Fixed Constructions – 21 – B
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Placing and cementing casing in horizontal wells

E - Fixed Constructions – 21 – B
Patent

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Ball drop head with rotating rings

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1381826

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