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| US4969267 | 8 Nov 1989 | 13 Nov 1990 | | Double-bladed knife for dicing and other cutting action for vegetables, meats and other foods | | US6416524 | 5 Abr 2001 | 9 Jul 2002 | | Double scalpel | | US7153303 | 19 Jun 2002 | 26 Dic 2006 | SDGI Holdings, Inc. | Guide and blade for contouring vertebral bodies |
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