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| US4524845 | 28 févr. 1983 | 25 juin 1985 | | Low frequency speaker enclosure |
| US4569414 | 29 juil. 1983 | 11 févr. 1986 | | Augmented speaker enclosure |
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Nippon Telegraph and Telephone Corporation | Speaker system having directivity |
| US5138656 | 31 mai 1991 | 11 août 1992 | | Intercom with transducer enclosure to attenuate resonant frequencies |
| US5321756 | 14 avr. 1992 | 14 juin 1994 | | Loudspeaker system with sonically powered drivers and centered feedback loudspeaker connected thereto |
| US5461676 | 29 mars 1993 | 24 oct. 1995 | | Device for improving bass reproduction in loudspeaker system with closed housings |
| US6278789 | 6 mai 1993 | 21 août 2001 | Bose Corporation | Frequency selective acoustic waveguide damping |
| US8170255 | 31 janv. 2007 | 1 mai 2012 | FEI Company | Enclosure for acoustic insulation of an apparatus contained within said enclosure |
