| Date | Description | European Patent Bulletin date, issue number |
|---|---|---|
| 07.07.2007 | Change - inventor | published on 08.08.2007 [2007/32] |
| 24.05.1988 | Application deemed to be withdrawn | published on 13.07.1988 [1988/28] |
| 07.04.1987 | Publication of search report | published on 27.05.1987 [1987/22] |
| 27.06.1986 | Publication in section I.1 EP Bulletin | published on 13.08.1986 [1986/33] |