|
| US4052984 | 25 Mar 1976 | 11 Oct 1977 | E. D. Bullard Company | Plenum type air distribution system for head enclosure |
| US4220867 | 18 Jul 1978 | 2 Sep 1980 | | Neck x-ray protective shield |
| US4223229 | 30 Nov 1978 | 16 Sep 1980 | | Oral radiation protector appliance |
| US4508115 | 28 Mar 1983 | 2 Apr 1985 | Dragerwerk AG | Protective breathing hood for escape purposes |
| US4697289 | 3 Jul 1985 | 6 Oct 1987 | Nava & C. S.p.A. | Protective device applicable to helmets, especially for sports use |
| US4752970 | 16 Jun 1987 | 28 Jun 1988 | | Protective face shield |
| US4803980 | 20 Oct 1986 | 14 Feb 1989 | Conax Florida Corporation | Automatic breathing mask release mechanism |
| US4869245 | 16 Oct 1987 | 26 Sep 1989 | Conax Florida Corporation | Automatic release mechanism for a breathing mask |
| US5022099 | 2 Feb 1990 | 11 Jun 1991 | | Radiation helmet |
| US5156146 | 16 Sep 1991 | 20 Oct 1992 | Conax Florida Corporation | Water-activated anti-suffocation protection apparatus |
| US6163891 | 15 Oct 1999 | 26 Dec 2000 | | Protector for hockey player |
| USD296719 | 25 Jun 1986 | 12 Jul 1988 | | Combined helmet and light |
| USD595013 | 4 Aug 2008 | 23 Jun 2009 | | Protective neck gear for use with a helmet |
