| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ARGENTINA | Approval | 17/10/1974 | |
| AUSTRALIA | Approval | 03/07/1973 | |
| BELGIUM | Approval | 01/01/1905 | |
| BELGIUM | Approval | 30/05/1973 | |
| BRAZIL | Approval | 27/10/1987 | |
| CHILE | Approval | 01/06/1973 | |
| CHILE | Approval | 11/03/1975 | |
| CHILE | Approval | 24/06/1981 | |
| CHINA | Approval | 11/12/1985 | |
| FRANCE | Approval | 11/04/1973 | |
| GERMAN DEMOCRATIC REPUBLIC | Approval | 23/08/1988 | |
| GERMANY FEDERAL REPUBLIC | Approval | 17/02/1981 | |
| GERMANY FEDERAL REPUBLIC | Approval | 04/08/1983 | |
| JAPAN | Approval | 01/01/1905 | |
| JAPAN | Approval | 08/08/1974 | |
| NEW ZEALAND | Approval | 26/04/1974 | |
| NORWAY | Approval | 19/10/1973 | |
| POLAND | Acceptance | 11/07/1977 | |
| SOUTH AFRICA | Approval | 22/05/1973 | |
| SOVIET UNION | Approval | 04/02/1974 | |
| UNITED KINGDOM | Approval | 29/05/1975 | |
| UNITED KINGDOM | Approval | 10/02/1988 | |
| UNITED STATES OF AMERICA | Approval | 06/02/1973 | |
| UNITED STATES OF AMERICA | Approval | 07/08/1979 |