Claude Swag and S. A. Zürich v.J. P. Leduc, Denise Thonnon and S, A. La Concorde. Case 9/69. Decision of July 10, 1969. Preliminary ruling on request of the Cour de Cassation Claude Swag and S. A. Zürich v.J. P. Leduc, Denise Thonnon and S, A. La Concorde. Case 9/69. Decision of July 10, 1969. Preliminary ruling on request of the Cour de Cassation Claude Swag and S. A. Zürich v.J. P. Leduc, Denise Thonnon and S, A. La Concorde. Case 9/69. Decision of July 10, 1969. Preliminary ruling on request of the Cour de Cassation