| Type | Equivalent | Publication No. | Date | Type | EP0336887 | Global Dossier
| 30.01.1991 | B1 | EP0336887 | 11.10.1989 | A1 | Priority number | Date | CH130488 | 08.04.1988 | Type | Equivalent | Publication No. | Date | Type | DE58900050D1 | 07.03.1991 | D1 | Priority number | Date | CH130488 | 08.04.1988 |