| Number | Date | Country | Kind |
|---|---|---|---|
| 001286405 | Jul 2011 | EM | regional |
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|---|---|---|---|
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| 5066391 | Faria | Nov 1991 | A |
| D365139 | Gibbins | Dec 1995 | S |
| 6544412 | Michels et al. | Apr 2003 | B2 |
| 6793808 | McKenzie | Sep 2004 | B2 |
| 7041217 | Close et al. | May 2006 | B1 |