| Date | Description | European Patent Bulletin date, issue number |
|---|---|---|
| 13.06.2008 | Change - representative | published on 16.07.2008 [2008/29] |
| 05.10.2005 | Change: Appeal number | |
| 10.09.1994 | No opposition filed within time limit | published on 02.11.1994 [1994/44] |
| 23.09.1993 | (Expected) grant | published on 10.11.1993 [1993/45] |
| 08.01.1991 | First examination report | |
| 26.06.1990 | Change - representative | published on 16.08.1990 [1990/33] |
| 03.04.1990 | Change - applicant | published on 23.05.1990 [1990/21] |
| 03.04.1990 | Change - representative | published on 23.05.1990 [1990/21] |
| 18.08.1989 | Request for examination filed | published on 04.10.1989 [1989/40] |
| 17.06.1989 | Publication in section I.1 EP Bulletin | published on 02.08.1989 [1989/31] |