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

Amos Jack Watkins

E - Fixed Constructions – 21 – B

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Country: Canada

Drilling apparatus, particularly wire line core drilling...

E - Fixed Constructions – 21 – B
Patent

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Propulsion seal for wire line core drilling apparatus

E - Fixed Constructions – 21 – B
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Resilient hoisting plug for drill rods and the like

E - Fixed Constructions – 21 – B
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Stabilized drill tube

E - Fixed Constructions – 21 – B
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Profile ID: LFCA-PAI-P-1705343

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