| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BELGIUM | Signature | 02/05/1934 | |
| BELGIUM | Ratification | 26/10/1936 | 26/11/1936 |
| Hong Kong | Accession | 28/12/1972 | |
| New Zealand | Accession | 02/03/1938 | |
| UNITED KINGDOM | Signature | 02/05/1934 | |
| UNITED KINGDOM | Ratification | 26/10/1936 | 26/11/1936 |