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

Andrew D. Gledhill

E - Fixed Constructions – 21 – B

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Inventor

Country: United Kingdom

Expandable bit with a secondary release device

E - Fixed Constructions – 21 – B
Patent

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Expandable bit with a secondary release device

E - Fixed Constructions – 21 – B
Patent

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Pressure activated release member for an expandable drillbit

E - Fixed Constructions – 21 – B
Patent

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Pressure activated release member for an expandable drillbit

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-1566280

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