| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Signature | 18/06/1964 | |
| BELGIUM | Approval | 13/11/1964 | |
| CANADA | Signature | 30/06/1964 | |
| CANADA | Approval | 12/10/1964 | |
| DENMARK | Signature | 25/06/1964 | |
| DENMARK | Approval | 29/07/1964 | |
| FRANCE | Signature | 18/06/1964 | |
| FRANCE | Approval | 27/10/1964 | |
| GERMANY FEDERAL REPUBLIC | Signature | 18/06/1964 | |
| GERMANY FEDERAL REPUBLIC | Approval | 12/03/1965 | |
| GREECE | Signature | 18/06/1964 | |
| GREECE | Approval | 20/11/1964 | |
| ICELAND | Signature | 18/06/1964 | |
| ICELAND | Approval | 20/11/1964 | |
| ITALY | Signature | 22/06/1964 | |
| ITALY | Approval | 14/09/1964 | |
| LATVIA | Signature | 24/09/2004 | 01/01/1900 |
| LITHUANIA | Signature | 08/09/2004 | 01/01/1900 |
| LITHUANIA | Ratification | 03/01/2005 | 03/01/2005 |
| LUXEMBOURG | Signature | 18/06/1964 | |
| LUXEMBOURG | Approval | 21/12/1964 | |
| NETHERLANDS THE | Signature | 18/06/1964 | |
| NETHERLANDS THE | Approval | 11/12/1964 | |
| NORWAY | Signature | 24/07/1964 | |
| NORWAY | Approval | 20/10/1964 | |
| PORTUGAL | Signature | 09/07/1964 | |
| PORTUGAL | Approval | 24/08/1964 | |
| SLOVAK REPUBLIC | Signature | 02/03/2005 | 01/01/1900 |
| TURKEY | Signature | 18/06/1964 | |
| TURKEY | Approval | 18/09/1964 | |
| UNITED KINGDOM | Signature | 18/06/1964 | |
| UNITED KINGDOM | Ratification | 09/11/1964 | |
| UNITED KINGDOM | Approval | 09/11/1964 | |
| UNITED STATES OF AMERICA | Signature | 18/06/1964 | |
| UNITED STATES OF AMERICA | Approval | 25/09/1964 | |