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Extract from the Register of European Patents

EP Event history: EP0023400


Date  Description European Patent Bulletin date, issue number
31.01.1985 No opposition filed within time limit published on  03.04.1985 [1985/14]
21.01.1984 (Expected) grant published on  21.03.1984 [1984/12]
16.03.1981 Request for examination filed published on  20.05.1981 [1981/20]
20.02.1981 Change - designated states published on  22.04.1981 [1981/16]
08.12.1980 Publication in section I.1 EP Bulletin published on  04.02.1981 [1981/05]