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

Bernard Doremus

E - Fixed Constructions – 21 – B

Inventor

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Details

Inventor

Country: France

Ball valve apparatus

E - Fixed Constructions – 21 – B
Patent

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Hydraulically operable control unit

E - Fixed Constructions – 21 – B
Patent

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Method for production testing of a well

E - Fixed Constructions – 21 – B
Patent

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Safety valve, in particular for closing an oil well

E - Fixed Constructions – 21 – B
Patent

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Subsea master valve for use in well testing

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1187526

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