Copyright. Convention between United States and Hungary, copyright, signed Budapest, Jan. 30, 1912, proclaimed Oct. 15, 1912; revived May 27, 1922, by notice given by United States in pursuance of article 224 of Treaty of Trianon, concluded June 4, 1920, to benefits of which United States became entitled by treaty of Aug; 29, 1921, establishing friendly relations between United States and Hungary.