| Country | Action | Action Date | Effective Date |
|---|
| Aden Colony | Extension | 01/01/1961 | |
| Aden Protectorate | Extension | 01/01/1962 | |
| AFGHANISTAN | Adoption | 01/01/1961 | |
| Alaska | Extension | 01/01/1961 | |
| ALBANIA | Adoption | 01/01/1961 | |
| American Samoa | Extension | 01/01/1961 | |
| Angola | Extension | 01/01/1961 | |
| Antigua | Extension | 01/01/1961 | |
| Antilles | Extension | 01/01/1961 | |
| ARGENTINA | Adoption | 01/01/1961 | |
| AUSTRIA | Adoption | 01/01/1961 | |
| Azores | Extension | 01/01/1961 | |
| Bahamas | Extension | 01/01/1961 | |
| Bahrain | Extension | 01/01/1961 | |
| Barbados | Extension | 01/01/1961 | |
| Basutoland | Extension | 01/01/1961 | |
| Bechuanaland | Extension | 01/01/1961 | |
| Belgian Congo | Extension | 01/01/1961 | |
| BELGIUM | Adoption | 25/05/1951 | |
| Bermuda | Extension | 01/01/1961 | |
| BOLIVIA | Adoption | 01/01/1961 | |
| BRAZIL | Adoption | 01/01/1961 | |
| British Guiana | Extension | 01/01/1961 | |
| British Honduras | Extension | 01/01/1961 | |
| British Solomon Islands | Extension | 01/01/1961 | |
| British Togoland | Extension | 01/01/1961 | |
| British Virgin Islands | Extension | 01/01/1961 | |
| Brunei | Extension | 01/01/1961 | |
| BULGARIA | Adoption | 01/01/1961 | |
| CAMBODIA | Adoption | 01/01/1961 | |
| Cameroons | Extension | 01/01/1961 | |
| CANADA | Adoption | 01/01/1961 | |
| Cape Verde Islands | Extension | 01/01/1961 | |
| CENTRAL AFRICAN REPUBLIC | Adoption | 01/01/1961 | |
| CEYLON | Adoption | 01/01/1961 | |
| CHAD | Adoption | 01/01/1961 | |
| Channel Islands | Extension | 01/01/1961 | |
| CHINA | Adoption | 01/01/1961 | |
| COLOMBIA | Adoption | 01/01/1961 | |
| Comoro Islands | Extension | 01/01/1961 | |
| CONGO | Adoption | 01/01/1961 | |
| Cook Islands | Extension | 01/01/1961 | |
| COSTA RICA | Adoption | 01/01/1961 | |
| CUBA | Adoption | 01/01/1961 | |
| Cyprus | Extension | 01/01/1961 | |
| CZECHOSLOVAKIA | Adoption | 01/01/1961 | |
| DAHOMEY | Adoption | 01/01/1961 | |
| DENMARK | Adoption | 01/01/1961 | |
| Dominica | Extension | 01/01/1961 | |
| DOMINICAN REPUBLIC | Adoption | 01/01/1961 | |
| ECUADOR | Adoption | 01/01/1961 | |
| EL SALVADOR | Adoption | 01/01/1961 | |
| ETHIOPIA | Adoption | 01/01/1961 | |
| Falkland Islands | Extension | 01/01/1961 | |
| Faroe Islands | Extension | 01/01/1961 | |
| Fiji | Extension | 01/01/1961 | |
| FINLAND | Adoption | 01/01/1961 | |
| FRANCE | Adoption | 25/05/1951 | |
| French Cameroons | Extension | 01/01/1961 | |
| French Equatorial Africa | Extension | 01/01/1961 | |
| French Polynesia | Extension | 01/01/1961 | |
| French Settlements In India | Extension | 01/01/1961 | |
| French Settlements In Oceania | Extension | 01/01/1961 | |
| French Somaliland | Extension | 01/01/1961 | |
| French Togoland | Extension | 01/01/1961 | |
| French West Africa | Extension | 01/01/1961 | |
| GABON | Adoption | 01/01/1961 | |
| GERMANY FEDERAL REPUBLIC | Adoption | 01/01/1961 | |
| GHANA | Adoption | 01/01/1961 | |
| Gibraltar | Extension | 01/01/1961 | |
| Gilbert And Ellice Islands | Extension | 01/01/1961 | |
| Gold Coast | Extension | 01/01/1961 | |
| GREECE | Adoption | 01/01/1961 | |
| Grenada | Extension | 01/01/1961 | |
| Guam | Extension | 01/01/1961 | |
| GUATEMALA | Adoption | 01/01/1961 | |
| GUINEA | Adoption | 01/01/1961 | |
| HAITI | Adoption | 01/01/1961 | |
| Hawaii | Extension | 01/01/1961 | |
| HONDURAS | Adoption | 01/01/1961 | |
| Hong Kong | Extension | 01/01/1961 | |
| ICELAND | Adoption | 01/01/1961 | |
| INDIA | Adoption | 01/01/1961 | |
| INDONESIA | Adoption | 01/01/1961 | |
| IRAN | Adoption | 01/01/1961 | |
| IRAQ | Adoption | 01/01/1961 | |
| IRELAND, REPUBLIC OF | Adoption | 01/01/1961 | |
| Isle of Man | Extension | 01/01/1961 | |
| ISRAEL | Adoption | 01/01/1961 | |
| ITALY | Adoption | 25/05/1951 | |
| IVORY COAST | Adoption | 01/01/1961 | |
| Jamaica | Extension | 01/01/1961 | |
| JAPAN | Adoption | 01/01/1961 | |
| JORDAN | Adoption | 01/01/1961 | |
| Kenya | Extension | 01/01/1961 | |
| KOREA REPUBLIC OF | Adoption | 01/01/1961 | |
| Kuwait | Extension | 01/01/1961 | |
| LAOS | Adoption | 01/01/1961 | |
| LEBANON | Adoption | 01/01/1961 | |
| Leeward Islands | Extension | 01/01/1961 | |
| LIBERIA | Adoption | 01/01/1961 | |
| LIBYA | Adoption | 01/01/1961 | |
| LUXEMBOURG | Adoption | 01/01/1961 | |
| Macao | Extension | 01/01/1961 | |
| MADAGASCAR | Adoption | 01/01/1961 | |
| Madagascar And Dependencies | Extension | 01/01/1961 | |
| Madeira | Extension | 01/01/1961 | |
| Malaya | Extension | 01/01/1961 | |
| MALDIVES | Adoption | 01/01/1961 | |
| MALI | Adoption | 01/01/1961 | |
| MAURITANIA | Adoption | 01/01/1961 | |
| Mauritius | Extension | 01/01/1961 | |
| MEXICO | Adoption | 01/01/1961 | |
| MONACO | Adoption | 01/01/1961 | |
| Montserrat | Extension | 01/01/1961 | |
| Morocco | Extension | 01/01/1961 | |
| Mozambique | Extension | 01/01/1961 | |
| NEPAL | Adoption | 01/01/1961 | |
| NETHERLANDS THE | Adoption | 25/05/1951 | |
| New Caledonia | Extension | 01/01/1961 | |
| New Guinea | Extension | 01/01/1961 | |
| New Hebrides | Extension | 01/01/1961 | |
| NEW ZEALAND | Adoption | 25/05/1951 | |
| NICARAGUA | Adoption | 01/01/1961 | |
| NIGER | Adoption | 01/01/1961 | |
| Nigeria | Extension | 01/01/1961 | |
| Niue Island | Extension | 01/01/1961 | |
| North Borneo | Extension | 01/01/1961 | |
| Northern Rhodesia | Extension | 01/01/1961 | |
| NORWAY | Adoption | 01/01/1961 | |
| Nyasaland | Extension | 01/01/1961 | |
| Pacific Islands | Extension | 01/01/1961 | |
| PAKISTAN | Adoption | 01/01/1961 | |
| PANAMA | Adoption | 01/01/1961 | |
| Panama Canal Zone | Extension | 01/01/1961 | |
| PARAGUAY | Adoption | 01/01/1961 | |
| PERU | Adoption | 01/01/1961 | |
| PHILIPPINES | Adoption | 01/01/1961 | |
| Pitcairn Islands | Extension | 01/01/1961 | |
| POLAND | Adoption | 01/01/1961 | |
| PORTUGAL | Adoption | 01/01/1961 | |
| Portuguese Guinea | Extension | 01/01/1961 | |
| Portuguese State Of India | Extension | 01/01/1961 | |
| Portuguese Timor | Extension | 01/01/1961 | |
| Puerto Rico | Extension | 01/01/1961 | |
| Qatar | Extension | 01/01/1961 | |
| Rhodesia And Nyasaland | Extension | 01/01/1961 | |
| ROMANIA | Adoption | 01/01/1961 | |
| Ruanda Urundi | Extension | 01/01/1961 | |
| Sao Tome And Principe | Extension | 01/01/1961 | |
| SARAWAK | Adoption | 01/01/1961 | |
| SAUDI ARABIA | Adoption | 01/01/1961 | |
| SENEGAL | Adoption | 01/01/1961 | |
| Seychelles | Extension | 01/01/1961 | |
| Sierra Leone | Extension | 01/01/1962 | |
| Somaliland | Extension | 01/01/1961 | |
| SOUTH AFRICA | Adoption | 01/01/1961 | |
| Southern Rhodesia | Extension | 01/01/1961 | |
| SOVIET UNION | Adoption | 01/01/1961 | |
| SPAIN | Adoption | 25/05/1951 | |
| Spain, Territories In Africa | Extension | 01/01/1961 | |
| Spanish Colonies | Extension | 01/01/1961 | |
| St Helena | Extension | 01/01/1961 | |
| St Kitts Nevis Anguilla | Extension | 01/01/1961 | |
| St Lucia | Extension | 01/01/1961 | |
| St Pierre and Miquelon | Extension | 01/01/1962 | |
| St Vincent | Extension | 01/01/1961 | |
| SUDAN | Adoption | 01/01/1961 | |
| SURINAME | Adoption | 01/01/1961 | |
| Swaziland | Extension | 01/01/1961 | |
| SWEDEN | Adoption | 01/01/1961 | |
| SWITZERLAND | Adoption | 01/01/1961 | |
| Tanganyika | Extension | 01/01/1961 | |
| THAILAND | Adoption | 01/01/1961 | |
| The Gambia | Extension | 01/01/1961 | |
| TOGO | Adoption | 01/01/1961 | |
| Tonga | Extension | 01/01/1961 | |
| Trinidad And Tobago | Extension | 01/01/1961 | |
| Trucial States | Extension | 01/01/1961 | |
| Tunisia | Extension | 01/01/1961 | |
| TURKEY | Adoption | 01/01/1961 | |
| Uganda | Extension | 01/01/1961 | |
| UNITED ARAB REPUBLIC | Adoption | 01/01/1961 | |
| UNITED KINGDOM | Adoption | 25/05/1951 | |
| UNITED STATES OF AMERICA | Adoption | 25/05/1951 | |
| UPPER VOLTA | Adoption | 01/01/1961 | |
| URUGUAY | Adoption | 01/01/1961 | |
| VATICAN CITY | Adoption | 01/01/1961 | |
| VENEZUELA | Adoption | 01/01/1961 | |
| VIETNAM | Adoption | 01/01/1961 | |
| Virgin Islands | Extension | 01/01/1961 | |
| WESTERN SAMOA | Adoption | 01/01/1962 | |
| YEMEN | Adoption | 01/01/1962 | |
| YUGOSLAVIA | Adoption | 01/01/1961 | |
| Zanzibar | Extension | 01/01/1961 | |