|
| US4019507 | 24 sept. 1975 | 26 avr. 1977 | Dragerwerk Aktiengesellschaft | Protective breathing device having a filtering apparatus and additional oxygen supply for emergency use |
| US4649912 | 7 mai 1985 | 17 mars 1987 | | Supplied air respirator system |
| US4722333 | 5 août 1985 | 2 févr. 1988 | Respirator Research Ltd. | Portable emergency breathing apparatus |
| US4744357 | 30 oct. 1986 | 17 mai 1988 | Respirator Research Ltd. | Portable emergency breathing apparatus |
| US4750485 | 5 déc. 1986 | 14 juin 1988 | Respirator Research Ltd. | Portable emergency breathing apparatus |
| US4781184 | 15 août 1986 | 1 nov. 1988 | | Closed circuit breathing apparatus and method of using same |
| US4794923 | 23 oct. 1986 | 3 janv. 1989 | Respirator research, ltd. | Portable emergency breathing apparatus |
| US4938211 | 12 oct. 1988 | 3 juil. 1990 | Nippon Sanso Kabushiki Kaisha | Breathing apparatus |
| US5275154 | 6 juin 1991 | 4 janv. 1994 | | Activated charcoal filter layer for gas masks |
| US5435305 | 24 mai 1993 | 25 juil. 1995 | | Emergency air supply pack |
| US5577498 | 29 juin 1994 | 26 nov. 1996 | Zexel Corporation | Semi-closed type breathing apparatus for removing carbon dioxide from breathing air circuit having triangularly shaped bellows |
| US6868852 | 2 avr. 2001 | 22 mars 2005 | | Cold weather breathing apparatus |
| US6926004 | 19 août 2004 | 9 août 2005 | Weinmann Geräte für Medizin GmbH & Co. KG | Breathing mask with a head fastening device |
| US7665465 | 25 mars 2005 | 23 févr. 2010 | RIC Investments, LLC | Headgear assembly for a respiratory support system |