| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | Signature | 05/06/1956 | |
| AUSTRIA | Ratification | 01/03/1957 | |
| AUSTRIA | Withdrawal | 10/08/1977 | 10/11/1977 |
| BELGIUM | Signature | 01/03/1956 | |
| CZECHOSLOVAKIA | Accession | 21/12/1962 | |
| CZECHOSLOVAKIA | Denunciation | 05/01/1977 | 05/04/1977 |
| DENMARK | Signature | 04/07/1956 | |
| DENMARK | Ratification | 28/03/1958 | |
| DENMARK | Withdrawal | 27/07/1976 | 27/10/1976 |
| EGYPT | Accession | 27/09/1963 | |
| EGYPT | Withdrawal | 30/11/1982 | 01/03/1983 |
| FINLAND | Accession | 07/12/1962 | |
| FINLAND | Withdrawal | 28/07/1978 | 28/10/1978 |
| FRANCE | Signature | 09/08/1956 | |
| FRANCE | Ratification | 03/07/1957 | |
| FRANCE | Withdrawal | 02/08/1979 | 02/11/1979 |
| GERMANY FEDERAL REPUBLIC | Signature | 05/06/1956 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 28/09/1965 | |
| GERMANY FEDERAL REPUBLIC | Withdrawal | 29/08/1978 | 29/11/1978 |
| Guernsey | Extension | 17/07/1958 | |
| Guernsey | Withdrawal | 01/07/1977 | 01/10/1977 |
| HAITI | Accession | 31/01/1958 | |
| Hong Kong | Extension | 03/03/1961 | 03/06/1961 |
| Hong Kong | Withdrawal | 01/07/1977 | 01/10/1977 |
| HUNGARY | Accession | 23/11/1965 | |
| HUNGARY | Withdrawal | 01/06/1978 | 01/09/1978 |
| IRELAND, REPUBLIC OF | Signature | 29/09/1956 | |
| IRELAND, REPUBLIC OF | Ratification | 28/04/1960 | |
| IRELAND, REPUBLIC OF | Withdrawal | 10/11/1978 | 10/02/1979 |
| Isle of Man | Extension | 17/07/1958 | |
| Isle of Man | Withdrawal | 01/07/1977 | 01/10/1977 |
| ISRAEL | Accession | 17/02/1961 | |
| ISRAEL | Withdrawal | 18/01/1980 | 18/04/1980 |
| ITALY | Signature | 20/09/1956 | |
| ITALY | Ratification | 11/10/1957 | |
| ITALY | Withdrawal | 14/03/1977 | 14/06/1977 |
| Jersey | Extension | 17/07/1958 | |
| Jersey | Withdrawal | 01/07/1977 | 01/10/1977 |
| Land Berlin | Extension | 28/12/1965 | |
| Land Berlin | Withdrawal | 29/08/1978 | 29/11/1978 |
| LUXEMBOURG | Signature | 04/05/1956 | |
| NETHERLANDS THE | Signature | 29/09/1956 | |
| NETHERLANDS THE | Ratification | 29/09/1958 | |
| NETHERLANDS THE | Withdrawal | 28/10/1977 | 28/01/1978 |
| NORWAY | Signature | 29/09/1956 | |
| NORWAY | Ratification | 25/03/1960 | |
| NORWAY | Withdrawal | 31/01/1977 | 30/04/1977 |
| PORTUGAL | Signature | 17/07/1956 | |
| PORTUGAL | Ratification | 22/02/1960 | |
| PORTUGAL | Withdrawal | 31/03/1978 | 30/06/1978 |
| Portuguese Overseas Provinces | Extension | 22/02/1960 | |
| Portuguese Overseas Provinces | Withdrawal | 31/03/1978 | |
| SPAIN | Accession | 02/01/1957 | |
| SPAIN | Withdrawal | 28/11/1977 | 28/02/1978 |
| SWEDEN | Signature | 29/09/1956 | |
| SWEDEN | Ratification | 27/05/1957 | |
| SWEDEN | Withdrawal | 23/11/1977 | 23/02/1978 |
| SWITZERLAND | Signature | 07/06/1956 | |
| SWITZERLAND | Ratification | 07/07/1960 | |
| SWITZERLAND | Withdrawal | 20/12/1976 | 20/03/1977 |
| Trinidad | Extension | 06/10/1961 | 06/01/1962 |
| Trinidad | Withdrawal | 01/07/1977 | 01/10/1977 |
| TURKEY | Signature | 11/07/1956 | |
| TURKEY | Ratification | 29/12/1959 | |
| TURKEY | Withdrawal | 29/12/1977 | 29/03/1978 |
| UNITED KINGDOM | Signature | 29/05/1956 | |
| UNITED KINGDOM | Ratification | 17/07/1958 | |
| UNITED KINGDOM | Denunciation | 01/07/1977 | 01/10/1977 |
| UNITED STATES OF AMERICA | Accession | 03/12/1968 | 03/03/1969 |
| UNITED STATES OF AMERICA | Withdrawal | 11/05/1977 | 11/08/1977 |
| YUGOSLAVIA | Accession | 19/12/1961 | |
| YUGOSLAVIA | Withdrawal | 10/05/1979 | 10/08/1979 |