141034 ⎘
Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines; Intake silencers Sound modulation, transmission or amplification using interference; Masking or reflecting sound by using active elements, e.g. speakers
Device increasing engine efficiency and reducing exhaust and noise
#2Adjustable sound distribution system and a vehicle
#3Sound attenuation device and method
#4Sound generator for an anti-noise system for influencing exhaust noise and/or intake noise of a motor vehicle
#5Sound generator for an anti-noise system for influencing exhaust noises and/or intake noises of a motor vehicle
#6Mapped sound generator
#7Exhaust device for an internal combustion engine
#8Active noise control apparatus for intake system of vehicle
#9Piston engine, method and use
#10Engine silencing and vibration reduction system and method
#11Air-intake device for internal combustion engine having noise reduction mechanism
#12Vehicle intake sound introducing apparatus
#13Air cleaner box, intake sound control apparatus, and intake sound control method
#14Intake muffler
#15ACTIVE INTAKE MUFFLER
#16Air suction device
#17Outboard motor with sound enhancement device and method for modifying sounds produced by air intake system of an outboard motor