Geophone and method for the study of eleastic wave phenomena
Geophone and method of manufacturing a geophone
Geophone apparatus and a seismic exploration method
Geophone having a non-conductive coilform
Geophone implantation system
Geophone securement mechanism
Geophone shock absorber
Geophone spring
Geophone spring
Geophone spring
Geophone springs
Geophone system
Geophone with a sensitive element made of piezoelectric polymer
Geophone with depth sensitive spikes
Geophone with mounted connectors
Geophysical exploration system using seismic vibrator source...
Gimbal lock system for seismic sensors
Ground movement sensor
Gun cable termination
Hand-held underwater distance measurement device