| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Antilles | Extension | 01/01/1986 | |
| Aruba | Extension | 01/01/1986 | |
| AUSTRALIA | Definitive Signature | 14/05/1963 | |
| AUSTRIA | Signature | 27/10/1958 | |
| BELGIUM | Definitive Signature | 06/01/1972 | |
| Berlin West | Extension | 25/08/1973 | |
| BOLIVIA | Definitive Signature | 17/10/1958 | |
| BOSNIA AND HERZEGOVINA | Succession | 12/01/1994 | |
| BYELORUSSIA S S R | Declaration | 01/01/1905 | |
| CAMBODIA | Signature | 22/01/1970 | |
| CANADA | Signature | 29/04/1958 | |
| CEYLON | Definitive Signature | 30/10/1958 | |
| COLOMBIA | Definitive Signature | 29/04/1958 | |
| COLOMBIA | Declaration | 29/04/1958 | |
| COSTA RICA | Definitive Signature | 29/04/1958 | |
| CUBA | Definitive Signature | 29/04/1958 | |
| CZECHOSLOVAKIA | Declaration | 01/01/1905 | |
| DENMARK | Signature | 29/04/1958 | |
| DENMARK | Ratification | 26/09/1968 | |
| DOMINICAN REPUBLIC | Definitive Signature | 29/04/1958 | |
| FINLAND | Signature | 27/10/1958 | |
| FINLAND | Ratification | 16/02/1965 | |
| FRANCE | Definitive Signature | 30/10/1958 | |
| GERMANY FEDERAL REPUBLIC | Signature | 30/10/1958 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 26/07/1973 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 25/08/1973 | |
| GHANA | Definitive Signature | 29/04/1958 | |
| HAITI | Signature | 29/04/1958 | |
| HAITI | Ratification | 29/03/1960 | |
| HUNGARY | Definitive Signature | 08/12/1989 | |
| INDONESIA | Signature | 08/05/1958 | |
| ISRAEL | Signature | 29/04/1958 | |
| LIBERIA | Definitive Signature | 27/05/1958 | |
| MALAGASY REPUBLIC | Definitive Signature | 10/08/1962 | |
| MALAWI | Definitive Signature | 17/12/1965 | |
| MALAYA | Definitive Signature | 01/05/1961 | |
| MALTA | Succession | 21/09/1964 | |
| MAURITIUS | Succession | 05/10/1970 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| NEPAL | Definitive Signature | 29/04/1958 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | |
| NETHERLANDS THE | Signature | 31/10/1958 | |
| NETHERLANDS THE | Ratification | 18/02/1966 | |
| NEW ZEALAND | Definitive Signature | 29/10/1958 | |
| PAKISTAN | Definitive Signature | 06/11/1958 | |
| PANAMA | Definitive Signature | 02/05/1958 | |
| PORTUGAL | Signature | 28/10/1958 | |
| PORTUGAL | Ratification | 08/01/1963 | |
| SIERRA LEONE | Definitive Signature | 14/02/1963 | |
| SOLOMON ISLANDS | Succession | 03/09/1981 | |
| SOVIET UNION | Declaration | 01/01/1905 | |
| SWEDEN | Signature | 01/06/1966 | |
| SWEDEN | Ratification | 28/06/1966 | |
| SWITZERLAND | Signature | 24/05/1958 | |
| SWITZERLAND | Ratification | 18/05/1966 | |
| TAIWAN | Definitive Signature | 29/04/1958 | |
| UGANDA | Definitive Signature | 15/09/1964 | |
| UNITED KINGDOM | Signature | 09/09/1958 | |
| UNITED KINGDOM | Definitive Signature | 09/09/1958 | |
| UNITED KINGDOM | Notification | 10/06/1997 | 01/07/1997 |
| UNITED STATES OF AMERICA | Signature | 15/09/1958 | |
| UNITED STATES OF AMERICA | Communication | 10/06/1963 | |
| URUGUAY | Definitive Signature | 29/04/1958 | |
| VATICAN CITY | Definitive Signature | 30/04/1958 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 12/03/2001 | 27/04/1992 |