Bipolar signal amplification or generation
Bore hole transmission system using impedance modulation
Bore telemetry channel of increased capacity
Borehole communication and measurement system
Borehole communication and measurement system
Borehole logging apparatus for deep well drillings with a...
Borehole telemetry system
Borehole telemetry system
Burst QAM downhole telemetry system
Burst QAM downhole telemetry system
Cable device for detecting and monitoring rock and soil...
Carrierless amplitude and phase modulation telementry for use in
Coil tubing string and downhole generator
Communicating with an underground object
Communication system for down hole use
Communication system for down hole use
Composite pipe telemetry conduit
Conductor system for well bore data transmission
Corrosion-resistant downhole transmission system
Data communication and power supply system for downhole...