Warning method and system for vehicles

Warning signal generating device for vehicle

Warning system

Warning system for passive vehicle occupant restraint belts

Warning system for school buses

Warning system for traffic routes at an avalanche danger hillsid

Warning system for vehicles

Warning system including means for remotely energizing condition

Warning-signal-producing system for a motor vehicle responsive t

Water-in-fuel sensor circuit and method

Wave-energy imaging technique

Wear indicator for friction linings

Wearable communication system

Weight-on-drill-bit and torque-measuring apparatus

Well bore communication method

Well bore data-transmission apparatus

Well bore data-transmission apparatus with debris clearing appar

Well data telemetry by explosions

Well depth matcher utilizing programmable shifting of well loggi

Well logging method and means using an armored multiconductor co