Reactive acoustic silencer
Reactive silencer for industrial air channels and its use
Reactive sound attenuator, in particular for air ducts in paper
Reduced cost vent silencer
Reduced noise valve stack connection
Refractive wave muffler
Refrigeration compressor muffler
Regenerable desiccant cartridge for automotive muffler
Removable exhaust baffle
Replaceable catalyst for exhaust system
Replaceable muffler structure with an adjustable length
Replacement muffler and process for making same
Resonance muffler
Resonant cavity devices for reducing noise within a duct in the
Resonating device for a pneumatic surgical instrument
Resonator
Resonator
Resonator performance by local reduction of component thickness
Resonator type mufflers
Resonator type silencer