| 5 July 1930 |
1 January 1933 |
International Convention respecting Load Lines with Final Protocol and Maps |
| 10 May 1952 |
14 September 1955 |
International Convention on Certain Rules concerning Civil Jurisdiction in Matters of Collision |
| 21 December 1959 |
1 January 1961 |
International Telecommunications Convention |
| 2 December 1961 |
10 August 1968 |
International Convention for the Protection of New Varieties of Plants |
| 14 July 1967 |
|
International Convention further revising the Paris Convention for the Protection of Industrial Property of 20 March 1883 |