Hänvisningar finns i följande patent|
| US4867251 | 8 maj 1987 | 19 sep 1989 | Kango Limited | Impact device | | US5267382 | 4 sep 1992 | 7 dec 1993 | | Scaling needle gun shroud | | US6030404 | 23 okt 1998 | 29 feb 2000 | | Skin penetration apparatus including multiple needle configuration | | US6695288 | 30 sep 2002 | 24 feb 2004 | | Pneumatic nail puller | | US7618429 | 22 dec 2005 | 17 nov 2009 | SpaMedica International SRL | Skin rejuvination resurfacing method |
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