| Country | Action | Action Date | Effective Date |
|---|
| ARMENIA | Accession | 09/06/2006 | 07/09/2006 |
| AUSTRIA | Signature | 19/05/1956 | |
| AUSTRIA | Ratification | 18/07/1960 | |
| AZERBAIJAN | Accession | 18/09/2006 | 17/12/2006 |
| BELARUS | Accession | 05/04/1993 | |
| BELGIUM | Signature | 19/05/1956 | |
| BELGIUM | Ratification | 18/09/1962 | |
| BOSNIA AND HERZEGOVINA | Succession | 01/09/1993 | 06/03/1992 |
| BULGARIA | Accession | 20/10/1977 | 18/01/1978 |
| BULGARIA | Reservation | 20/10/1977 | |
| Comoro Islands | Extension | 20/05/1959 | |
| CROATIA | Succession | 03/08/1992 | 08/10/1991 |
| CYPRUS | Accession | 02/07/2003 | 30/09/2003 |
| CZECH REPUBLIC | Succession | 02/06/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 04/09/1974 | 03/12/1974 |
| CZECHOSLOVAKIA | Declaration | 04/09/1974 | |
| CZECHOSLOVAKIA | Withdrawal Dec. | 26/04/1991 | |
| DENMARK | Accession | 28/06/1965 | |
| ESTONIA | Accession | 03/05/1993 | 01/08/1993 |
| FINLAND | Accession | 27/06/1973 | 25/09/1973 |
| FRANCE | Signature | 19/05/1956 | |
| FRANCE | Ratification | 20/05/1959 | |
| FRANCE | Declaration | 20/05/1959 | |
| FRANCE | Objection | 26/07/1984 | |
| FRANCE | Communication | 06/10/1986 | |
| French Guiana | Extension | 20/05/1959 | |
| French Polynesia | Extension | 20/05/1959 | |
| French Somaliland | Extension | 20/05/1959 | |
| GEORGIA | Accession | 04/08/1999 | 02/11/1999 |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 27/12/1973 | 27/03/1974 |
| GERMAN DEMOCRATIC REPUBLIC | Reservation | 27/12/1973 | |
| GERMAN DEMOCRATIC REPUBLIC | Objection | 27/12/1973 | |
| GERMANY FEDERAL REPUBLIC | Signature | 19/05/1956 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 07/11/1961 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 27/08/1984 | |
| GERMANY FEDERAL REPUBLIC | Communication | 15/01/1987 | |
| Gibraltar | Extension | 21/07/1967 | 29/01/1969 |
| GREECE | Accession | 24/05/1977 | 22/08/1977 |
| Guadeloupe | Extension | 20/05/1959 | |
| Guernsey | Extension | 21/07/1967 | 01/06/1972 |
| HUNGARY | Accession | 29/04/1970 | 28/07/1970 |
| HUNGARY | Reservation | 29/04/1970 | |
| HUNGARY | Declaration | 29/04/1970 | |
| HUNGARY | Withdrawal Res. | 08/12/1989 | |
| HUNGARY | Withdrawal Res. | 03/10/1990 | |
| IRAN | Accession | 17/09/1998 | 16/12/1998 |
| IRELAND | Accession | 31/01/1991 | 01/05/1991 |
| IRELAND | Declaration | 31/01/1991 | |
| Isle of Man | Extension | 21/07/1967 | 10/02/1970 |
| ITALY | Accession | 03/04/1961 | |
| JORDAN | Accession | 13/11/2008 | 11/02/2009 |
| LATVIA | Accession | 14/01/1994 | 14/04/1994 |
| LEBANON | Accession | 22/03/2006 | 20/06/2006 |
| LITHUANIA | Accession | 17/03/1993 | 15/06/1993 |
| LUXEMBOURG | Signature | 19/05/1956 | |
| LUXEMBOURG | Ratification | 20/04/1964 | |
| MACEDONIA THE FYR OF | Succession | 20/06/1997 | 17/11/1991 |
| MALTA | Accession | 21/12/2007 | 20/03/2008 |
| Martinique | Extension | 20/05/1959 | |
| MOLDOVA REPUBLIC OF | Accession | 26/05/1993 | 24/08/1993 |
| MONGOLIA | Accession | 18/09/2003 | 17/12/2003 |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| MOROCCO | Accession | 23/02/1995 | 24/05/1995 |
| MOROCCO | Reservation | 23/02/1995 | |
| NETHERLANDS THE | Signature | 19/05/1956 | |
| NETHERLANDS THE | Ratification | 27/09/1960 | |
| New Caledonia | Extension | 20/05/1959 | |
| NORWAY | Accession | 01/07/1969 | |
| POLAND | Signature | 19/05/1956 | |
| POLAND | Ratification | 13/06/1962 | |
| POLAND | Declaration | 13/06/1972 | |
| PORTUGAL | Accession | 22/09/1969 | 21/12/1969 |
| Reunion | Extension | 20/05/1989 | |
| ROMANIA | Accession | 23/01/1973 | 23/04/1973 |
| ROMANIA | Reservation | 23/01/1973 | |
| ROMANIA | Declaration | 23/01/1973 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| SLOVENIA | Succession | 01/07/1992 | 25/06/1991 |
| SOVIET UNION | Accession | 02/09/1983 | 01/12/1983 |
| SOVIET UNION | Reservation | 02/09/1983 | |
| SOVIET UNION | Declaration | 02/12/1985 | |
| SPAIN | Accession | 12/02/1974 | 13/03/1974 |
| St Pierre and Miquelon | Extension | 20/05/1959 | |
| SWEDEN | Signature | 19/05/1956 | |
| SWEDEN | Ratification | 02/04/1969 | |
| SWITZERLAND | Signature | 19/05/1956 | |
| SWITZERLAND | Ratification | 27/02/1970 | |
| SYRIA | Accession | 10/09/2008 | 09/12/2008 |
| TAJIKISTAN | Accession | 11/09/1996 | 10/12/1996 |
| TUNISIA | Accession | 14/01/1994 | 24/04/1994 |
| TURKMENISTAN | Accession | 18/09/1996 | 17/12/1996 |
| UKRAINE | Accession | 16/02/2007 | 17/05/2007 |
| UKRAINE | Reservation | 16/02/2007 | 17/05/2007 |
| UKRAINE S S R | Declaration | 21/02/1961 | |
| UNITED KINGDOM | Signature | 21/07/1967 | |
| UNITED KINGDOM | Ratification | 21/07/1967 | 19/10/1967 |
| UNITED KINGDOM | Objection | 11/09/1974 | |
| UNITED KINGDOM | Objection | 26/07/1984 | |
| UNITED KINGDOM | Communication | 06/10/1986 | |
| UNITED STATES OF AMERICA | Objection | 26/07/1984 | |
| UNITED STATES OF AMERICA | Communication | 06/10/1986 | |
| UZBEKISTAN | Accession | 28/09/1995 | 27/12/1995 |
| YUGOSLAVIA | Signature | 19/05/1956 | |
| YUGOSLAVIA | Ratification | 22/10/1958 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 12/03/2001 | 27/04/1992 |