| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Signature | 09/06/1969 | 01/01/1900 |
| DENMARK | Signature | 09/06/1969 | 01/01/1900 |
| FRANCE | Signature | 09/06/1969 | 01/01/1900 |
| GERMANY FEDERAL REPUBLIC | Signature | 09/06/1969 | 01/01/1900 |
| NETHERLANDS THE | Signature | 31/07/1969 | 01/01/1900 |
| NETHERLANDS THE | Ratification | 08/01/1974 | 01/01/1900 |
| NORWAY | Ratification | 28/09/1970 | 01/01/1900 |
| SWEDEN | Signature | 09/06/1969 | 01/01/1900 |
| UNITED KINGDOM | Signature | 09/06/1969 |