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| US5885260 | 18 Abr 1996 | 23 Mar 1999 | | Freeze-dried liposome delivery system for application of skin treatment agents |
| US6090085 | 11 Mar 1997 | 18 Jul 2000 | | Skin moisturizing and buffing device |
| US6183451 | 3 Dic 1998 | 6 Feb 2001 | | Method of delivery of skin treatment agents using freeze-dried liposomes |
