| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AFGHANISTAN | Accession | 10/04/1935 | |
| ALBANIA | Signature | 11/10/1933 | |
| ALGERIA | Accession | 31/10/1963 | |
| Antilles | Extension | 01/01/1986 | 01/01/1986 |
| Aruba | Extension | 01/01/1986 | 01/01/1986 |
| AUSTRALIA | Signature | 11/10/1933 | |
| AUSTRALIA | Ratification | 02/09/1936 | |
| AUSTRIA | Signature | 11/10/1933 | |
| AUSTRIA | Ratification | 07/08/1936 | |
| BELGIUM | Signature | 11/10/1933 | |
| BELGIUM | Ratification | 11/06/1936 | |
| BENIN | Succession | 04/04/1962 | |
| BRAZIL | Accession | 24/06/1938 | |
| BULGARIA | Signature | 11/10/1933 | |
| BULGARIA | Ratification | 19/12/1934 | |
| BYELORUSSIA S S R | Accession | 21/05/1948 | |
| CAMEROON | Succession | 27/10/1961 | |
| CENTRAL AFRICAN REPUBLIC | Succession | 04/09/1962 | |
| CHILE | Signature | 11/10/1933 | |
| CHILE | Ratification | 20/03/1935 | |
| CHINA | Signature | 11/10/1933 | |
| CONGO, REPUBLIC OF | Succession | 15/10/1962 | |
| CUBA | Accession | 25/06/1936 | |
| Curacao | Extension | 20/09/1935 | |
| CZECH REPUBLIC | Succession | 30/12/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 11/10/1933 | |
| CZECHOSLOVAKIA | Ratification | 27/07/1935 | |
| DANZIG | Signature | 11/10/1933 | |
| East Indies | Extension | 20/09/1935 | |
| FINLAND | Accession | 21/12/1936 | |
| FRANCE | Signature | 11/10/1933 | |
| FRANCE | Ratification | 08/01/1947 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 16/07/1974 | |
| GERMANY | Signature | 11/10/1933 | |
| GREECE | Signature | 11/10/1933 | |
| GREECE | Ratification | 20/08/1937 | |
| HUNGARY | Signature | 11/10/1933 | |
| HUNGARY | Ratification | 12/08/1935 | |
| IVORY COAST | Succession | 08/12/1961 | |
| JAMAICA | Acceptance | 16/03/1965 | |
| LATVIA | Signature | 11/10/1933 | |
| LATVIA | Ratification | 17/09/1935 | |
| LIBYA | Accession | 17/02/1959 | |
| LITHUANIA | Signature | 11/10/1933 | |
| LUXEMBOURG | Accession | 14/03/1955 | |
| MALI | Accession | 02/02/1973 | 02/04/1973 |
| MEXICO | Accession | 03/05/1938 | |
| MONACO | Signature | 11/10/1933 | |
| NETHERLANDS THE | Signature | 11/10/1933 | |
| NETHERLANDS THE | Ratification | 20/09/1935 | |
| NETHERLANDS THE | Declaration | 20/09/1935 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| NICARAGUA | Accession | 12/12/1935 | |
| NIGER | Succession | 25/08/1961 | |
| NORWAY | Signature | 11/10/1933 | |
| NORWAY | Ratification | 26/06/1935 | |
| PANAMA | Signature | 11/10/1933 | |
| PERSIA | Accession | 12/04/1935 | |
| PHILIPPINES | Accession | 30/09/1954 | |
| POLAND | Signature | 11/10/1933 | |
| POLAND | Ratification | 08/12/1937 | |
| PORTUGAL | Signature | 11/10/1933 | |
| PORTUGAL | Ratification | 07/01/1937 | |
| PORTUGAL | Communication | 21/10/1999 | |
| ROUMANIA | Accession | 06/06/1935 | |
| SIERRA LEONE | Accession | 13/08/1962 | |
| SINGAPORE | Accession | 26/10/1966 | |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| SOUTH AFRICA | Signature | 11/10/1933 | |
| SOUTH AFRICA | Ratification | 20/11/1935 | |
| SPAIN | Signature | 11/10/1933 | |
| SUDAN | Accession | 13/06/1934 | |
| Surinam | Extension | 20/09/1935 | |
| SWEDEN | Signature | 11/10/1933 | |
| SWEDEN | Ratification | 25/06/1934 | |
| SWITZERLAND | Signature | 11/10/1933 | |
| SWITZERLAND | Ratification | 17/07/1934 | |
| TURKEY | Accession | 19/03/1941 | |
| UNITED KINGDOM | Signature | 11/10/1933 | |
| UNITED KINGDOM | Declaration | 11/10/1933 | |
| YUGOSLAVIA | Signature | 11/10/1933 |