About: http://webisa.webdatacommons.org/51813371

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The holes or cuts, especially the slots may according to the invention preferably be of a diameter of 3 to 10 mm, be substantially circular or crescent-shaped, and be placed according to a regular pattern in the material layers.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es