| Country | Action | Action Date | Effective Date |
|---|
| ALGERIA | Signature | 10/04/1975 | |
| ARGENTINA | Signature | 14/04/1975 | |
| ARGENTINA | Provisional application | 14/04/1975 | |
| ARGENTINA | Ratification | 12/10/1976 | |
| AUSTRALIA | Signature | 11/04/1975 | |
| AUSTRALIA | Ratification | 13/06/1975 | |
| AUSTRIA | Signature | 10/04/1975 | |
| AUSTRIA | Ratification | 15/06/1976 | |
| BARBADOS | Accession | 28/11/1975 | |
| BELGIUM | Provisional application | 18/06/1975 | |
| BELGIUM | Declaration | 18/06/1975 | |
| BELGIUM | Accession | 04/10/1977 | |
| BELIZE | Extension | 18/06/1975 | |
| Berlin West | Extension | 15/09/1975 | |
| Bermuda | Extension | 18/06/1975 | |
| BOLIVIA | Accession | 02/06/1975 | |
| BRAZIL | Signature | 31/03/1975 | |
| BRAZIL | Provisional application | 18/06/1975 | |
| BRAZIL | Ratification | 08/08/1975 | |
| British Virgin Islands | Extension | 18/06/1975 | |
| CANADA | Signature | 14/04/1975 | |
| CANADA | Ratification | 18/06/1975 | |
| CUBA | Signature | 14/04/1975 | |
| CUBA | Statement | 14/04/1975 | |
| CUBA | Ratification | 06/04/1976 | |
| CUBA | Declaration | 06/04/1976 | |
| DENMARK | Accession | 18/06/1975 | |
| DENMARK | Declaration | 18/06/1975 | |
| DOMINICA, COMMONWEALTH OF | Extension | 18/06/1975 | |
| DOMINICAN REPUBLIC | Signature | 14/04/1975 | |
| DOMINICAN REPUBLIC | Ratification | 10/10/1975 | |
| ECUADOR | Signature | 14/04/1975 | |
| ECUADOR | Provisional application | 30/07/1975 | |
| ECUADOR | Ratification | 23/12/1975 | |
| EGYPT | Signature | 10/04/1975 | |
| EGYPT | Ratification | 17/06/1975 | |
| EL SALVADOR | Accession | 07/01/1976 | |
| EUROPEAN ECONOMIC COMMUNITY | Provisional application | 18/06/1975 | |
| EUROPEAN ECONOMIC COMMUNITY | Declaration | 18/06/1975 | |
| FINLAND | Signature | 11/04/1975 | |
| FINLAND | Provisional application | 16/06/1975 | |
| FINLAND | Ratification | 23/01/1976 | |
| FRANCE | Provisional application | 18/06/1975 | |
| FRANCE | Declaration | 18/06/1975 | |
| FRANCE | Accession | 30/06/1976 | |
| GERMANY FEDERAL REPUBLIC | Provisional application | 18/06/1975 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 18/06/1975 | |
| GERMANY FEDERAL REPUBLIC | Accession | 15/09/1975 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 15/09/1975 | |
| Gibraltar | Extension | 18/06/1975 | |
| Gilbert And Ellice Islands | Extension | 18/06/1975 | |
| GREECE | Accession | 18/06/1975 | |
| GUATEMALA | Signature | 10/04/1975 | |
| GUATEMALA | Provisional application | 18/06/1975 | |
| GUATEMALA | Ratification | 02/09/1976 | |
| Guernsey, Bailiwick of | Extension | 18/06/1975 | |
| Hong Kong | Extension | 18/06/1975 | |
| INDIA | Signature | 14/04/1975 | |
| INDIA | Ratification | 12/06/1975 | |
| IRAN | Provisional application | 17/06/1975 | |
| IRAN | Accession | 19/01/1978 | |
| IRAQ | Signature | 14/04/1975 | |
| IRAQ | Provisional application | 27/06/1975 | |
| IRAQ | Ratification | 04/12/1975 | |
| IRAQ | Declaration | 04/12/1975 | |
| IRELAND, REPUBLIC OF | Provisional application | 18/06/1975 | |
| IRELAND, REPUBLIC OF | Declaration | 18/06/1975 | |
| IRELAND, REPUBLIC OF | Accession | 24/06/1976 | |
| Isle of Man | Extension | 18/06/1975 | |
| ISRAEL | Signature | 14/04/1975 | |
| ISRAEL | Provisional application | 18/06/1975 | |
| ISRAEL | Ratification | 21/08/1975 | |
| ITALY | Provisional application | 18/06/1975 | |
| ITALY | Declaration | 18/06/1975 | |
| ITALY | Accession | 03/04/1978 | |
| JAPAN | Signature | 14/04/1975 | |
| JAPAN | Provisional application | 18/06/1975 | |
| JAPAN | Understanding | 18/06/1975 | |
| JAPAN | Acceptance | 20/02/1976 | |
| KENYA | Provisional application | 17/06/1975 | |
| KENYA | Accession | 25/05/1976 | |
| KOREA REPUBLIC OF | Signature | 03/04/1975 | |
| KOREA REPUBLIC OF | Ratification | 18/06/1975 | |
| LEBANON | Accession | 18/06/1975 | |
| LIBYA | Signature | 14/04/1975 | |
| LIBYA | Provisional application | 18/06/1975 | |
| LIBYA | Ratification | 28/07/1975 | |
| LUXEMBOURG | Provisional application | 18/06/1975 | |
| LUXEMBOURG | Declaration | 18/06/1975 | |
| LUXEMBOURG | Accession | 05/01/1976 | |
| MALTA | Accession | 29/04/1975 | |
| MAURITIUS | Signature | 25/04/1975 | |
| MAURITIUS | Ratification | 10/06/1975 | |
| Montserrat | Extension | 18/06/1975 | |
| MOROCCO | Signature | 11/04/1975 | |
| MOROCCO | Provisional application | 18/06/1975 | |
| MOROCCO | Ratification | 03/06/1976 | |
| NETHERLANDS THE | Provisional application | 18/06/1975 | |
| NETHERLANDS THE | Declaration | 18/06/1975 | |
| NETHERLANDS THE | Accession | 29/12/1978 | |
| NIGERIA | Accession | 18/06/1975 | |
| NORWAY | Signature | 14/04/1975 | |
| NORWAY | Approval | 18/06/1975 | |
| PAKISTAN | Signature | 04/04/1975 | |
| PAKISTAN | Ratification | 17/06/1975 | |
| PANAMA | Accession | 16/06/1975 | |
| PERU | Accession | 09/07/1975 | |
| PORTUGAL | Signature | 14/04/1975 | |
| PORTUGAL | Provisional application | 05/06/1975 | |
| PORTUGAL | Ratification | 03/12/1975 | |
| SAUDI ARABIA | Accession | 18/06/1975 | |
| SEYCHELLES | Extension | 18/06/1975 | |
| SOUTH AFRICA | Signature | 10/04/1975 | |
| SOUTH AFRICA | Ratification | 07/05/1975 | |
| SOVIET UNION | Signature | 08/04/1975 | |
| SOVIET UNION | Statement | 08/04/1975 | |
| SOVIET UNION | Acceptance | 06/05/1975 | |
| SOVIET UNION | Declaration | 06/05/1975 | |
| SOVIET UNION | Communication | 20/02/1976 | |
| SPAIN | Provisional application | 15/04/1975 | |
| SPAIN | Accession | 15/07/1975 | |
| St Helena And Dependencies | Extension | 18/06/1975 | |
| St Kitts Nevis Anguilla | Extension | 18/06/1975 | |
| St Vincent | Extension | 18/06/1975 | |
| SWEDEN | Signature | 14/04/1975 | |
| SWEDEN | Ratification | 16/06/1975 | |
| SWITZERLAND | Signature | 14/04/1975 | |
| SWITZERLAND | Provisional application | 12/06/1975 | |
| SWITZERLAND | Ratification | 23/09/1975 | |
| SYRIA | Provisional application | 17/06/1975 | |
| SYRIA | Accession | 19/07/1976 | |
| TRINIDAD AND TOBAGO | Signature | 14/04/1975 | |
| TRINIDAD AND TOBAGO | Ratification | 20/05/1975 | |
| TUNISIA | Provisional application | 04/06/1975 | |
| TUNISIA | Accession | 13/04/1976 | |
| UNITED KINGDOM | Accession | 18/06/1975 | |
| UNITED KINGDOM | Declaration | 18/06/1975 | |
| UNITED KINGDOM | Communication | 28/11/1975 | 01/10/1975 |
| UNITED STATES OF AMERICA | Signature | 10/04/1975 | |
| UNITED STATES OF AMERICA | Provisional application | 18/06/1975 | |
| UNITED STATES OF AMERICA | Declaration | 18/06/1975 | |
| UNITED STATES OF AMERICA | Ratification | 05/01/1976 | |
| VATICAN CITY | Signature | 14/04/1975 | |
| VATICAN CITY | Ratification | 16/06/1975 | |
| VENEZUELA | Signature | 14/04/1975 | |