| Number | Date | Country | Kind |
|---|---|---|---|
| 002303990-0015 | Sep 2013 | EM | regional |
| Number | Name | Date | Kind |
|---|---|---|---|
| D383938 | Littmann | Sep 1997 | S |
| D398809 | Henderson | Sep 1998 | S |
| D400756 | Henderson | Nov 1998 | S |
| D425368 | Littmann | May 2000 | S |
| D426105 | Littmann | Jun 2000 | S |
| D447380 | Feil | Sep 2001 | S |
| D485729 | Patton et al. | Jan 2004 | S |
| D510837 | Lloyd et al. | Oct 2005 | S |
| D592447 | Blaise | May 2009 | S |
| D649394 | Grabes et al. | Nov 2011 | S |
| D663573 | Nordwall | Jul 2012 | S |
| D668911 | Bachmann et al. | Oct 2012 | S |
| D695565 | Verbrugge et al. | Dec 2013 | S |