|
| US4257193 | 12 avr. 1979 | 24 mars 1981 | | Grate lock device |
| US5004534 | 16 mai 1988 | 2 avr. 1991 | | Catch basin |
| US5154199 | 8 févr. 1991 | 13 oct. 1992 | Semitool, Inc. | Semiconductor processor draining |
| US5490922 | 20 juil. 1994 | 13 févr. 1996 | Romag Rohren und Maschinen AG | Waste water plant with built-in mesh screen unit |
| US6062239 | 30 juin 1998 | 16 mai 2000 | Semitool, Inc. | Cross flow centrifugal processor |
| US6125863 | 30 juin 1998 | 3 oct. 2000 | Semitool, Inc. | Offset rotor flat media processor |
| US6299764 | 2 juin 2000 | 9 oct. 2001 | Stainless Steel Systems, Inc. | Sanitary floor drain |
| US6749746 | 25 janv. 2002 | 15 juin 2004 | Munro Concrete Products Ltd. | Catch basin trap with filter |
| US7494585 | 3 sept. 2004 | 24 févr. 2009 | | Large area catch basin filter |
| US7588392 | 24 avr. 2007 | 15 sept. 2009 | Zurn Industries, LLC | Removable grate |
| US7674371 | 5 mars 2002 | 9 mars 2010 | | Waste water installation with purification device |