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US3235029A
|
|
Sound attenuating panel with vibrating damping plate
|
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GB877532A
|
|
Improvements in sound attenuators for exhaust gases
|
|
US2965190A
|
|
Jet engine muffler
|
|
US3120295A
|
|
Wall and door structure for a sound proof room
|
|
GB831776A
|
|
Jet engine noise attenuator
|
|
US2915135A
|
|
Acoustical panel
|
|
US3185252A
|
|
Jet engine noise attenuator
|
|
GB694000A
|
|
Improvements in sound absorbing panel
|
|
GB683362A
|
|
Improvements in muffler construction
|
|
US2661072A
|
|
Air-cooled exhaust muffler with sound absorbing panels
|
|
US2674336A
|
|
Acoustical panel
|
|
GB684510A
|
|
Improvements in constructions of mufflers or ducts for dampening the sound of gas streams
|
|
US2674335A
|
|
Muffler construction
|
