| 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 |
|---|---|---|---|---|---|---|
| Argentina | 26-11-1971 | 01-07-1972 | ||||
| Bolivia | 26-11-1971 | 01-07-1972 | ||||
| Brazil | 26-11-1971 | 01-07-1972 | ||||
| Canada | 26-11-1971 | 01-07-1972 | ||||
| Chile | 26-11-1971 | 01-07-1972 | ||||
| Colombia | 26-11-1971 | 01-07-1972 | ||||
| Costa Rica | 26-11-1971 (S) | 01-07-1972 | ||||
| Cuba | 26-11-1971 | 01-07-1972 | ||||
| Dominican Republic | 26-11-1971 | 01-07-1972 | ||||
| Ecuador | 26-11-1971 | 01-07-1972 | ||||
| El Salvador | 26-11-1971 | 01-07-1972 | ||||
| Guatemala | 26-11-1971 | 01-07-1972 | ||||
| Haïti | 26-11-1971 (S) | 01-07-1972 | ||||
| Honduras | 26-11-1971 (S) | 01-07-1972 | ||||
| Mexico | 26-11-1971 | 01-07-1972 | ||||
| Netherlands, the Kingdom of the | 18-01-1993 (A) | 18-01-1993 | ||||
| Nicaragua | 26-11-1971 (S) | 01-07-1972 | ||||
| Panama | 26-11-1971 (S) | 01-07-1972 | ||||
| Paraguay | 26-11-1971 | 01-07-1972 | ||||
| Peru | 26-11-1971 | 01-07-1972 | ||||
| Portugal | 01-01-1990 (A) | 01-01-1990 | ||||
| Spain | 26-11-1971 | 01-07-1972 | ||||
| Suriname | 01-01-1978 (A) | 01-01-1978 | ||||
| United States of America | 26-11-1971 | 01-07-1972 | ||||
| Uruguay | 26-11-1971 | 01-07-1972 | ||||
| Venezuela | 26-11-1971 (S) | 01-07-1972 |