| Party | Signature | Provisional application |
RatificationS=Signature without reservation or requirement of ratification R=Ratification, Acceptance, Approval or Notification A=Accession Su=Succession NK=Not Known | Entry into force | Renunciation | Termination |
|---|---|---|---|---|---|---|
| Austria | 27-03-1931 | |||||
| Belgium | 27-03-1931 | 12-02-1936 (R) | 12-04-1936 | |||
| Czechoslovakia (<01-01-1993) | 12-06-1931 | |||||
| Denmark | 27-03-1931 | 22-07-1937 (R) | 20-09-1937 | |||
| Estonia | 06-06-1933 | 27-05-1936 (R) | 26-07-1936 | |||
| Finland | 14-12-1932 | 20-04-1938 (R) | 19-06-1938 | |||
| Hungary | 21-12-1931 | 06-07-1937 (R) | 04-09-1937 | |||
| Italy | 27-03-1933 | |||||
| Luxembourg | 02-07-1931 | |||||
| Netherlands, the Kingdom of the | 27-03-1931 | 12-02-1936 (R) | 12-04-1936 | |||
| Norway | 28-07-1931 | 03-04-1937 (R) | 02-06-1937 | |||
| Portugal | 02-04-1931 | 30-11-1936 (R) | 29-01-1937 | |||
| Romania | 26-05-1931 | |||||
| Spain | 27-03-1931 | |||||
| Sweden | 21-05-1931 | 30-07-1937 (R) | 28-09-1937 | |||
| Switzerland | 04-05-1931 | |||||
| Yugoslavia (< 25-06-1991) | 27-03-1931 |