| Date | Description | European Patent Bulletin date, issue number |
|---|---|---|
| 03.10.1997 | Refusal of application | published on 19.11.1997 [1997/47] |
| 31.07.1997 | Surcharge for renewal fee | |
| 20.06.1997 | Application refused | |
| 11.01.1997 | Communication of intention to grant | |
| 05.07.1996 | Examination report or reply | |
| 05.06.1996 | Renewal fee | |
| 15.05.1996 | Examination report or reply | |
| 09.01.1996 | Examination report or reply | |
| 08.01.1996 | First examination report | |
| 16.11.1994 | Request for examination filed | published on 04.01.1995 [1995/01] |
| 03.05.1994 | Publication of search report | published on 22.06.1994 [1994/25] |
| 27.04.1994 | Change - classification | published on 15.06.1994 [1994/24] |
| 29.10.1993 | Publication in section I.1 EP Bulletin | published on 15.12.1993 [1993/50] |