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| US7410211 | 7. Febr. 2007 | 12. Aug. 2008 | | Folding chair with wheels |
| US7641211 | 17. Okt. 2007 | 5. Jan. 2010 | Volodymyr Ivanchenko | Apparatus for transporting an invalid |
| US7841611 | 13. Nov. 2009 | 30. Nov. 2010 | Volodymyr Ivanchenko | Apparatus for transporting an invalid |
