173240 ⎘
Seismology; Seismic or acoustic prospecting or detecting; Receiving elements for seismic signals; Arrangements or adaptations of receiving elements; Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements; Geophones with moving magnet
Detection system for detecting discontinuity interfaces and/or anomalies in pore pressures in geological formations
#2Infrasonic detection using a parallel dipole line trap
#3Geophone with magnetic self-damping system
#4Dual core locking geophone
#5Geophone with tunable resonance frequency
#6Dual-coil geophone accelerometer
#7Multi-coil multi-terminal closed-loop geophone accelerometer
#8Micro-geophone
#9Micro-geophone
#10Micro-geophone
#11Method and apparatus for the acquisition of seismic movements