Sound attenuator for low frequencies, in particular for air duct
Sound attenuator for pneumatic exhaust
Sound attenuator with throat tuner
Sound dampening and wear protecting flapper configuration...
Sound dampening assembly for automotive exhaust system
Sound dampening device for telephones
Sound dampening flow channel device
Sound damping apparatus
Sound damping apparatus
Sound damping device, preferably for reducing the noise of blow-
Sound damping means for air conditioning system
Sound elimination structure for air pump
Sound generator with structurally and acoustically coupled...
Sound insulating apparatus
Sound muffler for covering the mouth
Sound muffling apparatus for air operated equipment
Sound muffling baffle for drainage device
Sound muffling cup
Sound producing vehicle exhaust system
Sound reduction means for pulsating type furnace