Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/12
Is Reference of Instandhoudingstaks-nl#Sense
Verlaengerungsgebuehr-de#Sense
Taxe pour le maintien-fr#Sense
Tassa per il mantenimento in vigore del brevetto-it#Sense
Maintenance fee-en#Sense