|
| US4198717 | 7 Apr 1978 | 22 Apr 1980 | | Modular assembly for drain trap |
| US4248711 | 2 Jun 1980 | 3 Feb 1981 | | Basement floor drain and integral trap |
| US4254512 | 21 Dec 1978 | 10 Mar 1981 | | Water trap |
| US4263138 | 15 Feb 1980 | 21 Apr 1981 | | Trap-type drain fitting |
| US5284580 | 4 Aug 1992 | 8 Feb 1994 | | Refuse collecting frame for sewer |
| US6299764 | 2 Jun 2000 | 9 Oct 2001 | Stainless Steel Systems, Inc. | Sanitary floor drain |
| US7288188 | 27 Feb 2006 | 30 Oct 2007 | | Ground water collection system |
| US7300590 | 14 Jul 2005 | 27 Nov 2007 | | Method and apparatus for separating oil and debris from water run-off |
| US7540953 | 12 Jan 2007 | 2 Jun 2009 | | Integrated below-ground vault with a filtered catch basin |
| US7704386 | 9 Jan 2008 | 27 Apr 2010 | | Filter assembly |
| USD587787 | 10 Apr 2008 | 3 Mar 2009 | Sioux Chief Manufacturing Co., Inc. | Floor drain |
