|
| US4543112 | 30 Abr 1984 | 24 Sep 1985 | Figgie International Inc. | Sorbent type filter assembly for a respirator and method of making same |
| US4572178 | 27 Mar 1984 | 25 Feb 1986 | Toyo CCI Kabushiki Kaisha | Emergency mask |
| US4677976 | 27 Mar 1984 | 7 Jul 1987 | Toyo Cci Kabushiki Kaisha Katsumi Fujinuma | Emergency mask |
| US4932399 | 6 Oct 1988 | 12 Jun 1990 | Industrie Pirelli Ministero Della Difesa | Device for replacing the filter of a gas mask in a polluted atmosphere without any contamination risk |
| US5562092 | 31 Jul 1995 | 8 Oct 1996 | | Firefighter's emergency smoke filter |
| US6277178 | 20 Ene 1995 | 21 Ago 2001 | 3M Innovative Properties Company | Respirator and filter cartridge |
| US6340024 | 4 Nov 1994 | 22 Ene 2002 | DME Corporation | Protective hood and oral/nasal mask |
| US6701925 | 11 Abr 2002 | 9 Mar 2004 | | Protective hood respirator |
| US6761169 | 17 Ago 2001 | 13 Jul 2004 | Vase Technology | Bi/multi-directional filter cartridge and filter platform for mounting the cartridge thereon |
| US6793702 | 28 Jun 2001 | 21 Sep 2004 | | Filter cartridge platform and filter cartridge for use on the platform |
| US6860267 | 17 Abr 2001 | 1 Mar 2005 | Avon Protection Systems, Inc. | Self-sealing filter connection and gas mask filter assembly incorporating the same |
| USD294410 | 9 Abr 1985 | 23 Feb 1988 | Siebe North, Inc. | Valve assembly for a respirator |