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

Douglas J. Lehr

E - Fixed Constructions – 21 – B

Inventor

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Details

Inventor

Country: United States Of America

Annular fracturing service tool system

E - Fixed Constructions – 21 – B
Patent

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Deformable release device for use with downhole tools

E - Fixed Constructions – 21 – B
Patent

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Drillable bridge plug

E - Fixed Constructions – 21 – B
Patent

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Encapsulated back-up system for use with seal system

F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent

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Gravity valve for a downhole tool

E - Fixed Constructions – 21 – B
Patent

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Subterranean well casing float tool

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1237200

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