Machine method for determining the presence and location of hydr
Magnetic coupler for electroacoustic hydrophones
Magnetic drive subassembly in a depth control device
Magnetic heading sensor alignment and roll reducing device
Magnetic motion coupling for well logging instruments
Magnetic relative position measuring system
Magnetically driven underwater pulse generator
Magneto-acoustic signal conditioner
Magneto-inductive submarine communications system and buoy
Magnetohydrodynamic fluid apparatus and method
Magnetohydrodynamic fluid transducer
Magnetohydrodynamic geophone
Magnetoresistive microphone and acoustic sensing devices
Magnetorheological fluid controlled mud pulser
Magnetostrictive acoustic transducer
Magnetostrictive multiple position sensing device
Magnetostrictive pulse generator
Magnetostrictive transducer for logging tool
Maltese cross processor: a high speed compound acoustic imaging
Man overboard alert and locating system