| 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 | 24-10-1956 | 24-06-1959 (R) | 01-01-1962 | |||
| Belgium | 17-10-1969 | 26-08-1970 (R) | 25-10-1970 | |||
| China | ||||||
| France | 24-10-1956 | 02-05-1963 (R) | 01-07-1963 | |||
| Germany | 26-08-1959 | 02-11-1961 (R) | 01-01-1962 | |||
| Greece | 24-10-1956 | |||||
| Italy | 08-10-1958 | 22-02-1961 (R) | 01-01-1962 | |||
| Japan | 10-02-1977 | 22-07-1977 (R) | 20-09-1977 | |||
| Liechtenstein | 02-06-1972 (A) | 18-02-1973 | ||||
| Luxembourg | 24-10-1956 | 27-08-1958 (R) | 01-01-1962 | |||
| Netherlands, the Kingdom of the | 24-10-1956 | 15-10-1962 (R) | 14-12-1962 | |||
| Norway | 24-10-1956 | |||||
| Portugal | 07-01-1958 | 06-12-1968 (R) | 04-02-1969 | |||
| Spain | 24-10-1956 | 27-03-1974 (R) | 26-05-1974 | |||
| Switzerland | 04-07-1963 | 18-11-1964 (R) | 17-01-1965 | |||
| Türkiye | 10-06-1970 | 28-02-1972 (R) | 29-04-1972 |