4. Communications, electrical: acoustic wave systems and devices
  5. Signal transducers
  6. Vibrator-type transmitter

John M. Crowell

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Independently powered breakout apparatus and method for a sectio

Wells – Valves – closures or changeable restrictors
Patent

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Pre-loaded vibrator assembly with mechanical lock

Communications – electrical: acoustic wave systems and devices – Signal transducers – Vibrator-type transmitter
Patent

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Radiation detector spectrum simulator

Oscillators – Electrical noise or random wave generator
Patent

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Removable piston bore liner for hydraulically actuated seismic v

Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent

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Profile ID: LFUS-PAI-P-33776

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