| Number | Date | Country | Kind |
|---|---|---|---|
| D2007-026831 | Aug 2007 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 2718385 | Greblick et al. | Sep 1955 | A |
| 3942770 | Belouet et al. | Mar 1976 | A |
| 4183682 | Lieffers | Jan 1980 | A |
| 4466741 | Kojima | Aug 1984 | A |
| 4514095 | Ehrfeld et al. | Apr 1985 | A |
| 4643584 | Allocca | Feb 1987 | A |
| 4824614 | Jones | Apr 1989 | A |
| 4850705 | Horner | Jul 1989 | A |
| 5758967 | King | Jun 1998 | A |
| 6109781 | Ogasawara et al. | Aug 2000 | A |
| D436647 | Etschel et al. | Jan 2001 | S |
| 7137731 | Carlson | Nov 2006 | B2 |
| Number | Date | Country |
|---|---|---|
| 10-85721 | Apr 1998 | JP |
| 2001-50425 | Feb 2001 | JP |
| 2001-62269 | Mar 2001 | JP |
| 2003-181256 | Jul 2003 | JP |
| 2005-219036 | Aug 2005 | JP |
| WO-0024502 | May 2000 | WO |