Two-layer coating and process for its production
Two-phase-flow muffler in a rotating shaft
Two-piece megaphone with ornamental member
Two-section exponential acoustical horn
Two-tube muffler and method of manufacture
Two-way loudspeaker for vehicle
Ultra-light, multifunctional sound-insulating kit
Ultra-small portable sound reproducing apparatus
Ultralight trim composite
Ultralight trim composite
Ultrasonic device
Ultrasonic horn
Ultrasonic horn assembly
Ultrasonic measurement apparatus
Ultrasonic measurement apparatus
Ultrasonic measurement apparatus and method
Ultrasonic rangefinder
Ultrasonic rangefinder
Ultrasonic rod waveguide-radiator
Underground acoustic wave transmitter, receiver,...