| Number | Name | Date | Kind |
|---|---|---|---|
| D218834 | Smith et al. | Sep 1970 | S |
| 3879068 | Stampfli | Apr 1975 | A |
| 3888353 | Leifheit | Jun 1975 | A |
| 4247133 | Moller | Jan 1981 | A |
| 4441684 | Credle, Jr. | Apr 1984 | A |
| D298604 | Newton | Nov 1988 | S |
| D357923 | Peterson et al. | May 1995 | S |
| 5492455 | Durham et al. | Feb 1996 | A |
| 5624167 | Katz | Apr 1997 | A |
| D388439 | Cantley et al. | Dec 1997 | S |
| 6050662 | Filipek et al. | Apr 2000 | A |
| 6123208 | Haenszel | Sep 2000 | A |
| 6161708 | Myler | Dec 2000 | A |
| 6241106 | Fujita et al. | Jun 2001 | B1 |
| 6267268 | Quartarone et al. | Jul 2001 | B1 |
| D446968 | Spencer | Aug 2001 | S |
| 6435357 | Lee | Aug 2002 | B1 |
| 6834768 | Jersey et al. | Dec 2004 | B2 |
| 20020117462 | Hung | Aug 2002 | A1 |
| 20040245200 | Jersey et al. | Dec 2004 | A1 |
| Number | Date | Country |
|---|---|---|
| WO 8707236 | Mar 1987 | WO |