| Number | Date | Country | Kind |
|---|---|---|---|
| 2010/0081 | Feb 2010 | SE | national |
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|---|---|---|---|
| 4269173 | Krueger et al. | May 1981 | A |
| 4386600 | Eggert, Jr. | Jun 1983 | A |
| 5125608 | McMaster et al. | Jun 1992 | A |
| D380191 | White | Jun 1997 | S |
| D408554 | Dinwoodie | Apr 1999 | S |
| 6105316 | Bottger et al. | Aug 2000 | A |
| 6563040 | Hayden et al. | May 2003 | B2 |
| D611404 | Mackler | Mar 2010 | S |