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| US4632302 | 30 Sep 1981 | 30 Dic 1986 | Federal Paper Board Co., Inc. | Shallow wall baking tray | | US5931373 | 14 Oct 1997 | 3 Ago 1999 | Unibind (Cyprus) Limited | File folder with connecting sides pieces | | US6330968 | 2 Ago 1999 | 18 Dic 2001 | Unibind (Cyprus) Limited | File folder with connecting side pieces |
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