|
| US3973935 | 5 May 1975 | 10 Ago 1976 | Super Products Corporation | Dust filtration system |
| US4351723 | 18 Ago 1980 | 28 Sep 1982 | | Means for removing residual water from a surface |
| US4796327 | 23 Sep 1987 | 10 Ene 1989 | Ing. Alfred Schmidt GmbH | Apparatus for picking up dog excrement |
| US5263225 | 25 Mar 1992 | 23 Nov 1993 | | Wet/dry vacuum system |
| US5455983 | 15 Ene 1993 | 10 Oct 1995 | The Hoover Company | Wet/dry utility vacuum cleaner |
| US5511280 | 27 Feb 1995 | 30 Abr 1996 | | Vacuum cleaner assembly with low vacuum inlet |
| US5608945 | 5 Jul 1995 | 11 Mar 1997 | The Hoover Company | Wet/dry utility vacuum cleaner |
| US5644815 | 18 Ene 1994 | 8 Jul 1997 | The Hoover Company | Sliding door valve for utility vacuum cleaner |
| US5657508 | 30 Ago 1995 | 19 Ago 1997 | Compagnie Generale Des Matieres Nucleaires | Apparatus for the extraction of objects immobilized in a pneumatic transfer network |
| US5850668 | 12 Jul 1996 | 22 Dic 1998 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
| US5918344 | 8 Oct 1996 | 6 Jul 1999 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
| US5920955 | 11 Feb 1997 | 13 Jul 1999 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
| US5943732 | 18 Abr 1997 | 31 Ago 1999 | The Hoover Company | Door valve for utility vacuum cleaners |
| US5966775 | 25 Nov 1996 | 19 Oct 1999 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
| US6009596 | 6 Ene 1998 | 4 Ene 2000 | Shop Vac Corporation | Self-evacuating vacuum cleaner |
| US6079076 | 31 Jul 1997 | 27 Jun 2000 | Shop-Vac Corporation | Vacuum cleaner collection bag |
| US6112366 | 20 Ene 1999 | 5 Sep 2000 | Shop Vac Corporation | Outlet priming self-evacuation vacuum cleaner |
| US6230361 | 15 Dic 1999 | 15 May 2001 | Shop Vac Corporation | Dust pan closure for a vacuum cleaner |
| US6309469 | 15 Mar 1999 | 30 Oct 2001 | Shop Vac Corporation | Debris access door |
