|
| US4431597 | 29 Sep 1982 | 14 Feb 1984 | Air-O-Lator Corporation | Horizontal mixing aerator |
| US4911826 | 21 Feb 1989 | 27 Mar 1990 | Cominco Ltd. | Sparging system for column flotation |
| US4936878 | 17 Mar 1989 | 26 Jun 1990 | Flakt AB | Method for cleansing gas and apparatus herefor |
| US4941896 | 31 Mar 1989 | 17 Jul 1990 | Flakt AB | Method and apparatus for cleansing gases |
| US6568661 | 3 May 2001 | 27 May 2003 | Tomco2 Equipment Co. | Diffuser for use in a carbonic acid control system |
| USD655782 | 20 May 2011 | 13 Mar 2012 | | Rotating spray bar |
