| Number | Name | Date | Kind |
|---|---|---|---|
| 3540072 | Wolter et al. | Nov 1970 | A |
| 3624861 | Freiheit | Dec 1971 | A |
| D361803 | Houry et al. | Aug 1995 | S |
| D365179 | Bradd | Dec 1995 | S |
| D403482 | Essex et al. | Dec 1998 | S |
| D406928 | Rowley et al. | Mar 1999 | S |
| 5887313 | Hanold et al. | Mar 1999 | A |
| D412379 | Stephens et al. | Jul 1999 | S |
| 6026540 | Wright et al. | Feb 2000 | A |
| D440365 | Salo et al. | Apr 2001 | S |
| D441154 | Roberts et al. | Apr 2001 | S |
| D442750 | Saunders et al. | May 2001 | S |
| Number | Date | Country |
|---|---|---|
| 2337923 | Dec 1999 | GB |
| Entry |
|---|
| US 6,266,845, 07/2001, Lang (withdrawn) |