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

Albert P. Jr. Davis

E - Fixed Constructions – 21 – B

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Country: United States Of America

Drill string sub with self closing cable port valve

E - Fixed Constructions – 21 – B
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Method and apparatus for detecting wear of a rotatable bit

G - Physics – 01 – N
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Profile ID: LFCA-PAI-P-1172010

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