| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BANGLADESH | Accession | 10/08/1978 | 10/11/1978 |
| CAMEROON | Signature | 06/10/1971 | |
| CHINA P R | Signature | 06/10/1971 | |
| CYPRUS | Accession | 24/08/1989 | 24/11/1989 |
| EGYPT | Accession | 28/01/1976 | 28/04/1976 |
| FRANCE | Signature | 06/01/1972 | |
| FRANCE | Approval | 27/09/1974 | 27/12/1974 |
| GREECE | Signature | 05/01/1972 | |
| GREECE | Ratification | 17/09/1979 | 17/12/1979 |
| Hong Kong | Extension | 27/10/1981 | 27/10/1981 |
| INDIA | Signature | 05/01/1972 | |
| INDIA | Acceptance | 01/09/1976 | 01/12/1976 |
| INDONESIA | Signature | 06/10/1971 | |
| INDONESIA | Acceptance | 13/04/1973 | |
| NORWAY | Signature | 06/10/1971 | |
| NORWAY | Acceptance | 02/03/1973 | |
| PAKISTAN | Signature | 06/10/1971 | |
| PHILIPPINES | Accession | 02/07/1973 | 02/01/1974 |
| SAO TOME AND PRINCIPE | Accession | 29/10/1998 | 29/01/1999 |
| SAUDI ARABIA | Accession | 05/09/1975 | 05/12/1975 |
| SRI LANKA | Accession | 10/12/1981 | 10/03/1982 |
| ST VINCENT AND THE GRENADINES | Accession | 31/05/1989 | 31/08/1989 |
| SWEDEN | Accession | 28/02/1978 | 28/05/1978 |
| UNITED KINGDOM | Signature | 06/10/1971 | |
| UNITED KINGDOM | Acceptance | 16/08/1979 | 16/11/1979 |
| YEMEN ARAB REPUBLIC | Accession | 06/06/1979 | 06/09/1979 |