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| US5167745 | 25 maj 1990 | 1 dec 1992 | | Method for consolidation of fibrous nonwoven structures |
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| US5681469 | 2 jul 1996 | 28 okt 1997 | Memtec America Corporation | Melt-blown filtration media having integrally co-located support and filtration fibers |
| US5733581 | 2 jul 1996 | 31 mar 1998 | Memtec America Corporation | Apparatus for making melt-blown filtration media having integrally co-located support and filtration fibers |
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| US6074869 | 11 apr 1997 | 13 jun 2000 | Pall Corporation | Fibrous web for processing a fluid |
| US6364647 | 8 okt 1998 | 2 apr 2002 | | Thermostatic melt blowing apparatus |
| US7018188 | 8 apr 2003 | 28 mar 2006 | The Procter & Gamble Company | Apparatus for forming fibers |
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