|
| US4210254 | 10 Aug 1978 | 1 Jul 1980 | Union Tank Car Company | Railroad tank car |
| US4318348 | 28 Jan 1980 | 9 Mar 1982 | Union Tank Car Company | Railroad tank car |
| US4542764 | 6 Sep 1983 | 24 Sep 1985 | E. I. Du Pont de Nemours and Company | Leak containment kit |
| US4940049 | 23 Oct 1989 | 10 Jul 1990 | John Kirchgeorg | Gas dispensing apparatus and case therefor |
| US5597010 | 8 Sep 1995 | 28 Jan 1997 | | Safety cap for fluid valve |
| US6742550 | 4 Jun 2002 | 1 Jun 2004 | | Secondary containment cap apparatus for either permanent or removable attachment to a primary chlorine container turret |
| US7631780 | 25 Jun 2004 | 15 Dec 2009 | C + S Chlorgas GmbH | Compressed gas container |
