| Patents for A62B 18 - Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes (6,940) |
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| 10/30/1979 | US4172455 Breathing equipment for high altitude flights |
| 10/30/1979 | US4172294 Protective all-purpose helmet |
| 10/16/1979 | CA1064201A1 Smoke mask apparatus |
| 09/11/1979 | US4167185 Face mask seal |
| 08/21/1979 | US4164942 Face mask and facepiece therefor |
| 05/22/1979 | US4155358 Respirator |
| 04/10/1979 | CA1052225A1 Respirator pressure-demand exhalation valve |
| 02/13/1979 | CA1048203A1 Protection-hood or helmet-mask for use in environments dangerous to work |
| 01/30/1979 | US4136688 Protective devices |
| 01/30/1979 | US4136403 Head guard assembly comprising a protective helmet and a protective breathing mask |
| 01/09/1979 | US4133308 Protective devices |
| 11/28/1978 | US4127122 Breathing apparatus |
| 11/21/1978 | US4126131 Facemask and goggle combination for excluding smoke or noxious gases from the goggles |
| 09/26/1978 | US4116237 Emergency breathing apparatus |
| 09/26/1978 | CA1039144A1 Shielded face mask |
| 08/08/1978 | US4105026 Bowless eyeglasses holder |
| 07/04/1978 | US4098270 Smoke mask apparatus |
| 06/20/1978 | US4095289 Air ventilation apparatus for flight helmet |
| 05/23/1978 | US4090511 Mouthpiece valve for escape breathing apparatus |
| 04/18/1978 | USRE29613 Inhaler apparatus |
| 04/11/1978 | US4083065 Protective helmet and full face mask construction |
| 03/14/1978 | US4078561 Air supplied emergency helmet |
| 01/24/1978 | US4069516 Breathing face mask |
| 12/13/1977 | US4062359 Low temperature breathing apparatus |
| 11/08/1977 | US4057058 Protection-hood or helmet-mask for use in environments dangerous to work |
| 11/08/1977 | US4057057 Breathing mask, especially a half mask or a full mask provided with an inner mask |
| 10/11/1977 | US4052984 Plenum type air distribution system for head enclosure |
| 07/26/1977 | US4037593 Surgical mask with vapor barrier |
| 06/14/1977 | US4029092 Compartmentalized full face mask |
| 06/14/1977 | US4028739 Ventilated helmet with selected weight distribution |
| 05/17/1977 | US4023214 Means for holding eyeglasses within a scuba mask |
| 03/15/1977 | US4011865 Dust-proof protection mask of face covering type |
| 02/15/1977 | US4007758 Respirator pressure-demand exhalation valve |
| 11/16/1976 | US3991753 Device for preventing an individual from inhaling germs, foreign bodies, or the like |
| 11/09/1976 | US3990757 Connecting device |
| 11/09/1976 | US3990439 Protective breathing apparatus and valve therefor |
| 09/28/1976 | US3982532 Breathing mask, particularly for artificial respiration |
| 07/13/1976 | US3968793 Clamping ring for the window frame of a breathing mask |
| 06/15/1976 | US3963021 Respirators |
| 02/03/1976 | US3935861 Protective breathing mask with compressed air supply for breathing |