Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/12
Is Reference of Decadenza del brevetto-it#Sense
Expiration of a patent-en#Sense
Einde van het octrooi-nl#Sense
Fin de la durée du brevet-fr#Sense
Ablauf eines Patents-de#Sense