| Number | Date | Country | Kind |
|---|---|---|---|
| 40 2012 001 440 | Mar 2012 | DE | national |
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| D405455 | Leu et al. | Feb 1999 | S |
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| D660320 | Varini | May 2012 | S |
| D681679 | Osaka et al. | May 2013 | S |