|
| US4357730 | 11 mars 1980 | 9 nov. 1982 | | Portable cleaning apparatus |
| US5208941 | 23 juin 1992 | 11 mai 1993 | | High power vacuum attachment apparatus |
| US5336158 | 12 nov. 1992 | 9 août 1994 | | Pneumatic vacuum vibrator apparatus |
| US5935088 | 8 sept. 1997 | 10 août 1999 | | Massaging apparatus with vacuum, auxiliary power source and pinch rollers |
| US6209169 | 8 sept. 1999 | 3 avr. 2001 | Wessel-Werk GmbH | Turbine-powered brush nozzle for vacuum cleaner |
| US6309303 | 13 déc. 1999 | 30 oct. 2001 | | Slip clutch for a tube cleaner |