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

Jianjun He

E - Fixed Constructions – 21 – B

Inventor

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Inventor

Country: China

A downhole-drilling tool with high-pressure and...

E - Fixed Constructions – 21 – B
Patent

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A downhole-drilling tool with high-pressure and...

E - Fixed Constructions – 21 – B
Patent

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An overrunning clutch

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

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Profile ID: LFCA-PAI-P-2081384

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