Inlet noise deflector

Jet catchers

Jet engine noise suppressor

Lock core panel

Low noise level muffler for small engines

Marine muffler

Method and apparatus for reducing aerodynamic whistle

Method and means for controlling the air pressure in a sound-pro

Mineral aggregate (perlite) acoustical board

Movable acoustic shell assembly

Muffler

Muffler

Muffler

Muffler

Muffler construction

Muffler converter

Muffler for a governed pneumatic tool

Muffler for intermittent blasts of air from pneumatic tools, val

Muffler for pile driving apparatus

Muffler system