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| Number | Title | Issue Date |
| 5522197 | Method in connection with a roof drainage apparatus and a roof drainage apparatus The invention relates to a method in connection with a roof drainage apparatus and a roof drainage apparatus. The invention comprises a trough (2) recessed in a roof structure (1), an opening (3) arranged in the bottom of the trough, a water-outlet tube (... | 06/04/1996 |
