| 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 |
|---|---|---|---|---|---|---|
| Belgium | 16-04-1956 (R) | 16-04-1956 | ||||
| Bulgaria | 28-05-1994 (A) | 28-05-1994 | ||||
| Cyprus | 18-10-1962 (A) | 18-10-1962 | ||||
| Denmark | 01-04-1978 (A) | 01-04-1978 | ||||
| Finland | 13-05-1991 (A) | 13-05-1991 | ||||
| France | 16-04-1956 (R) | 16-04-1956 | ||||
| Germany | 16-04-1956 (R) | 16-04-1956 | ||||
| Greece | 16-04-1956 (R) | 16-04-1956 | ||||
| Holy See | 04-09-1973 (A) | 04-09-1973 | ||||
| Iceland | 16-04-1956 (R) | 16-04-1956 | ||||
| Italy | 16-04-1956 (R) | 16-04-1956 | ||||
| Liechtenstein | 01-01-1976 (A) | 01-01-1976 | ||||
| Luxembourg | 16-04-1956 (R) | 16-04-1956 | ||||
| Malta | 01-03-1973 (A) | 01-03-1973 | ||||
| Netherlands, the Kingdom of the | 08-08-1978 (A) | 08-08-1978 | ||||
| Norway | 01-01-1978 (A) | 01-01-1978 | ||||
| Portugal | 01-08-1976 (A) | 01-08-1976 | ||||
| San Marino | 27-04-1989 (A) | 27-04-1989 | ||||
| Spain | 01-01-1978 (A) | 01-01-1978 | ||||
| Sweden | 01-07-1977 (A) | 01-07-1977 | ||||
| Switzerland | 01-01-1974 (A) | 01-01-1974 | ||||
| Türkiye | 16-04-1956 (R) | 16-04-1956 |