Country | Action | Action Date | Effective Date |
BULGARIA | Adherence | 21-Aug-1972 | |
CANADA | Signature | 26-Jun-1956 | |
CANADA | Ratification | 27-Mar-1957 | |
CUBA | Adherence | 28-Nov-1975 | |
DENMARK | Signature | 09-Jul-1956 | |
DENMARK | Ratification | 23-Nov-1956 | |
FRANCE | Signature | 09-Jul-1956 | |
FRANCE | Ratification | 10-Jan-1959 | |
GERMAN DEMOCRATIC REPUBLIC | Adherence | 21-May-1974 | |
GERMANY FEDERAL REPUBLIC | Accession | 27-Jun-1957 | |
ICELAND | Signature | 09-Jul-1956 | |
ICELAND | Ratification | 23-Nov-1956 | |
ITALY | Signature | 28-Jun-1956 | |
ITALY | Ratification | 07-Jun-1957 | |
JAPAN | Accession | 01-Jul-1970 | |
Land Berlin | Accession | 26-Aug-1957 | |
NORWAY | Signature | 03-Jul-1956 | |
NORWAY | Ratification | 15-May-1957 | |
POLAND | Accession | 25-Jul-1963 | |
PORTUGAL | Signature | 03-Jul-1956 | |
PORTUGAL | Ratification | 17-Jan-1957 | |
ROMANIA | Accession | 21-Mar-1967 | |
SOVIET UNION | Accession | 11-Aug-1958 | |
SPAIN | Signature | 05-Jul-1956 | |
SPAIN | Ratification | 02-May-1957 | |
UNITED KINGDOM | Signature | 29-Jun-1956 | |
UNITED KINGDOM | Ratification | 02-Apr-1957 | |
UNITED STATES OF AMERICA | Signature | 09-Jul-1956 | |
UNITED STATES OF AMERICA | Ratification | 22-May-1957 | |
UNITED STATES OF AMERICA | Withdrawal | 31-Dec-1976 |