• USA
    8 March 1948
  • Sweden
    1 May 1948
  • Mexico
    12 June 1948
  • France
    21 July 1948
  • Finland
    17 December 1948
  • Spain
    23 March 1950
    (Madrid)
  • Denmark
    15 May 1950
  • Portugal
    27 May 1950
  • Austria
    1982
  • West Germany
    1982