About: http://webisa.webdatacommons.org/22783589

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 apparatus according to claim 1, wherein the protective coating is a metal, a metal oxide or nitride, CaF2, SiO, SiO2 or any combination of these materials. 5.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com