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

Paul Helderle

E - Fixed Constructions – 21 – B

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Inventor

Country: France

Mandrel and associated positioning method

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

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Safety valve for oil well

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-1115750

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