| Party | Signature | Provisional application |
RatificationS=Signature without reservation or requirement of ratification R=Ratification, Acceptance, Approval or Notification A=Accession Su=Succession NK=Not Known | Entry into force | Renunciation | Termination |
|---|---|---|---|---|---|---|
| Austria | 13-12-1957 | |||||
| Belgium | 13-12-1955 | 12-01-1962 (R) | 23-02-1965 | |||
| Denmark | 13-12-1955 | 09-03-1961 (R) | 23-02-1965 | |||
| France | 13-12-1955 | |||||
| Germany | 13-12-1955 | 23-02-1965 (R) | 23-02-1965 | |||
| Greece | 13-12-1955 | 02-03-1965 (R) | 02-03-1965 | |||
| Iceland | 13-12-1955 | |||||
| Ireland | 01-09-1966 | 01-09-1966 (R) | 01-09-1966 | |||
| Italy | 13-12-1955 | 31-10-1963 (R) | 23-02-1965 | |||
| Luxembourg | 13-12-1955 | 06-03-1969 (R) | 06-03-1969 | |||
| Netherlands, the Kingdom of the | 13-12-1955 | 21-05-1969 (R) | 21-05-1969 | |||
| Norway | 13-12-1955 | 20-11-1957 (R) | 23-02-1965 | |||
| Sweden | 13-12-1955 | 24-06-1971 (R) | 01-07-1971 | |||
| Türkiye | 13-12-1955 | 20-03-1990 (R) | 20-03-1990 | |||
| United Kingdom | 24-02-1956 | 14-10-1969 (R) | 14-10-1969 |