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

Ole Sevheim

E - Fixed Constructions – 21 – B

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Inventor

Country: Norway

Bellows valve

E - Fixed Constructions – 21 – B
Patent

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Bellows valve

E - Fixed Constructions – 21 – B
Patent

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Bellows valve

E - Fixed Constructions – 21 – B
Patent

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Device for injection and stimulation of fluids in a well bore

E - Fixed Constructions – 21 – B
Patent

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Shear open valve

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1820647

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