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| US4152864 | 12 Jul 1976 | 8 May 1979 | | Device for forming bubbles from planar film shapes |
| US5312665 | 20 Ago 1992 | 17 May 1994 | Michelsen Packaging Company | Biodegradable loose-fill packing material |
| US5427316 | 24 May 1994 | 27 Jun 1995 | | Multiple sucking-channel straw for sucking beverages |
