4. F - Mech Eng,Light,Heat,Weapons
  5. 16
  6. C

Valery I. Semenets

F - Mech Eng,Light,Heat,Weapons – 16 – C

Inventor

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Inventor

Country: Ussr

Bottom hole motor for driving rock-breaking tool

E - Fixed Constructions – 21 – B
Patent

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Downhole screw motor

E - Fixed Constructions – 21 – B
Patent

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Downhole sectional screw motor and method of oriented...

E - Fixed Constructions – 21 – B
Patent

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Helical down-hole machine

E - Fixed Constructions – 21 – B
Patent

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Hinge joint of bottom-hole helical planetary hydraulic machine

E - Fixed Constructions – 21 – B
Patent

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Screw machine

F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent

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Profile ID: LFCA-PAI-P-8502

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