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| US4069594 | 30 Jul 1976 | 24 Ene 1978 | Sulzer Brothers Limited | Drying cylinder |
| US4232455 | 2 May 1978 | 11 Nov 1980 | Beloit Corporation | Dryer drum condensate removal apparatus |
| US4476637 | 9 Jun 1982 | 16 Oct 1984 | Beloit Corporation | Sheet paper drying cylinder for a continuous papermaking machine |
| US4538360 | 26 Mar 1984 | 3 Sep 1985 | Beloit Corporation | Steam heated dryer drum having stationary siphon and spoiler bars |
| US6012234 | 23 Dic 1997 | 11 Ene 2000 | Voith Sulzer Papiermaschinen GmbH | Device for drying a continuous web |
