Citada por|
| US4499700 | 7 Dic 1981 | 19 Feb 1985 | Plannja AB | Roofing sheet | | US4965977 | 13 Feb 1990 | 30 Oct 1990 | | Insulated panelized roofing system | | US5251416 | 17 Oct 1991 | 12 Oct 1993 | | Insulated panelized roofing system | | US5295338 | 8 Ene 1992 | 22 Mar 1994 | Alcan Aluminum Corporation | Building panel assembly | | US5881501 | 22 Ago 1995 | 16 Mar 1999 | Fabrel, Inc. | Roof system and panel therefor |
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