| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| AUSTRIA | Signature | 27/11/1925 | |
| AUSTRIA | Ratification | 04/07/1927 | |
| BELGIUM | Signature | 27/11/1925 | |
| BELGIUM | Ratification | 02/07/1927 | |
| BELGIUM | Withdrawal | 09/03/1972 | 09/03/1973 |
| BULGARIA | Signature | 27/11/1925 | |
| BULGARIA | Ratification | 02/07/1927 | |
| BULGARIA | Withdrawal | 04/03/1980 | 04/03/1981 |
| CZECHOSLOVAKIA | Signature | 27/11/1925 | |
| CZECHOSLOVAKIA | Ratification | 17/01/1929 | |
| CZECHOSLOVAKIA | Withdrawal | 19/04/1974 | 19/04/1975 |
| DANZIG | Accession | 23/07/1930 | |
| FINLAND | Signature | 27/11/1925 | |
| FRANCE | Signature | 27/11/1925 | |
| FRANCE | Ratification | 02/07/1927 | |
| FRANCE | Withdrawal | 13/06/1975 | 13/06/1976 |
| GERMAN DEMOCRATIC REPUBLIC | Re-Application | 22/08/1958 | |
| GERMAN DEMOCRATIC REPUBLIC | Withdrawal | 31/08/1976 | 31/08/1977 |
| GERMANY | Signature | 27/11/1925 | |
| GERMANY | Ratification | 02/07/1927 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/01/1953 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/10/1953 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 29/01/1954 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 01/03/1954 | |
| GERMANY FEDERAL REPUBLIC | Withdrawal | 14/02/1975 | 14/02/1976 |
| GREECE | Signature | 27/11/1925 | |
| GREECE | Ratification | 06/02/1931 | |
| GREECE | Declaration | 29/01/1954 | |
| HUNGARY | Signature | 27/11/1925 | |
| HUNGARY | Ratification | 03/01/1928 | |
| HUNGARY | Withdrawal | 31/08/1978 | 05/01/1979 |
| ITALY | Signature | 27/11/1925 | |
| ITALY | Ratification | 27/09/1932 | |
| ITALY | Reservation | 27/09/1932 | |
| ITALY | Declaration | 01/03/1954 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| NETHERLANDS THE | Signature | 27/11/1925 | |
| NETHERLANDS THE | Ratification | 02/07/1927 | |
| NETHERLANDS THE | Withdrawal | 14/08/1978 | 14/08/1979 |
| POLAND | Signature | 27/11/1925 | |
| POLAND | Ratification | 16/06/1930 | |
| ROUMANIA | Signature | 27/11/1925 | |
| ROUMANIA | Ratification | 18/05/1928 | |
| ROUMANIA | Withdrawal | 19/04/1975 | 24/05/1976 |
| SERB-CROAT-SLOVENE STATE | Signature | 27/11/1925 | |
| SOVIET UNION | Signature | 27/11/1925 | |
| SPAIN | Signature | 27/11/1925 | |
| SPAIN | Ratification | 11/07/1927 | |
| SWITZERLAND | Signature | 27/11/1925 | |
| SWITZERLAND | Ratification | 02/07/1927 | |
| SWITZERLAND | Withdrawal | 07/02/1975 | 07/02/1976 |
| UNITED KINGDOM | Signature | 27/11/1925 | |
| UNITED KINGDOM | Ratification | 14/06/1927 | |
| UNITED KINGDOM | Reservation | 14/06/1927 | |
| UNITED KINGDOM | Signature | 27/11/1927 | |
| UNITED KINGDOM | Declaration | 01/01/1953 | |
| YUGOSLAVIA | Signature | 27/11/1925 | |
| YUGOSLAVIA | Ratification | 07/05/1930 | |
| YUGOSLAVIA | Withdrawal | 13/06/1976 | 28/07/1975 |