4. Communications, electrical: acoustic wave systems and devices
  5. Seismic prospecting
  6. Well logging

Louis H. Barnard

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Downhole pressure fluctuating feedback system

Boring or penetrating the earth – Natural vibration characteristic of an element of boring...
Patent

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Dynamic downhole recorder

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent

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Impact tool with hydraulic cocking mechanism

Tool driving or impacting – Impacting devices – With means to cause or control advance of hammer head
Patent

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Titanium carbide modified hardfacing for use on bearing surfaces

Metal tools and implements – making – Blank or process – Drill
Patent

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Profile ID: LFUS-PAI-P-710111

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