|
| US4274404 | 13 Abr 1979 | 23 Jun 1981 | American Safety Flight Systems, Inc. | Oxygen supply system controlled by user exhalation |
| US4622963 | 15 Abr 1985 | 18 Nov 1986 | Figgie International Inc. | Self-contained portable single patient ventilator/resuscitator |
| US5239706 | 15 Jul 1991 | 31 Ago 1993 | | Underpants and coordinated bifurcated overgarment |
