|
| US4258824 | 22 Jan 1979 | 31 Mar 1981 | BioResearch Inc. | Sound muffling baffle for drainage device |
| US4284169 | 22 Aug 1978 | 18 Aug 1981 | Plessey Australia Pty. Limited | Bubble noise reduction |
| US4527658 | 31 Jul 1984 | 9 Jul 1985 | | Bubble silencer for an underwater voice communicator |
| US4714443 | 20 Aug 1986 | 22 Dec 1987 | Textron Inc. | Flexible exhaust duct |
| US5079775 | 19 Nov 1990 | 14 Jan 1992 | Tohgun Kigyo Co., Ltd. | Diving helmet |
| US5159923 | 4 Jun 1991 | 3 Nov 1992 | Tohgun Kigyo Co., Ltd. | Diving helmet |
| US5570688 | 17 Nov 1993 | 5 Nov 1996 | Cochran Consulting, Inc. | Advanced dive computer for use with a self-contained underwater breathing apparatus |
| US5577498 | 29 Jun 1994 | 26 Nov 1996 | Zexel Corporation | Semi-closed type breathing apparatus for removing carbon dioxide from breathing air circuit having triangularly shaped bellows |
| US5591058 | 18 Aug 1995 | 7 Jan 1997 | | Exhaust accessory for boats |
| US7455061 | 21 Sep 2005 | 25 Nov 2008 | Kirby Morgan Dive Systems, Inc. | Bubble diverter for use with diving equipment |
| US7921964 | 26 Jun 2008 | 12 Apr 2011 | | Method and apparatus for altering and/or minimizing underwater noise |