|
| US5511568 | 1 Oct 1993 | 30 Abr 1996 | Minnesota Mining and Manufacturing Company | Endoscopic cannulated instrument flushing apparatus for forcing a cleaning solution through an endoscopic cannulated instrument for removal of gross debris |
| US5711819 | 24 Abr 1996 | 27 Ene 1998 | | Method for cleaning the interior of tanks and other objects |
| US5769958 | 11 Dic 1995 | 23 Jun 1998 | Highway Transport, Inc. | Tank wetting method |
| US5873181 | 8 Ene 1998 | 23 Feb 1999 | | System for cleaning the interior of tanks and other objects |
| US6192901 | 10 Dic 1998 | 27 Feb 2001 | Motorvac Technologies, Inc. | Air intake cleaner system |