Opinion of Mr Advocate General Darmon delivered on 19 April 1989

1 Original language: French.

2 Directive laying down detailed provisions concerning transitional measures in respect of activities of self-employed persons in manufacturing and processing industries falling within ISIC Major Groups 23 to 40 ((Industry and small craft industries) OJ, English Special Edition 1963-64, p. 148).

3 Judgment of 7 February 1979 in Case 115/78 Knoori v Secretary of Siale for Economic Affairs [1979] ECR 399, paragraph 25.

4 Recommendation to the Member States concerning certificates of experience in the country whence the migrant comes provided for in Article 4(2) of Council Directive 64/427/EEC of 7 July 1964 laying down detailed provisions concerning transitional measures in respect of activities of self-employed persons in manufacturing and processing industries falling within ISIC Major Groups 23 to 40 ((Industry and small craft industries) JO 24, 11.2.1965, p. 410).

5 See the Commission's observations, p. 13 in the French version.

6 Judgment of 23 March 1982 in Case 53/81 Levin v Staatssecretaris van Justitie [1982] ECR 1035; see also the judgments of 11 July 1985 in Case 105/84 Foreningen af Arbejdsledere i Danmark v Dannols Inventor [1985] ECR 2639, and of 3 July 1986 in Case 66/85 Lawne-Blum [1986] ECR 2121, paragraph 16.