About: http://webisa.webdatacommons.org/426954678

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	In this embodiment, the center area of the diffuser 20 is limited in vertical movement by the backing plate 28, which is designed to exhibit a much higher tolerance to forces such as gravity, vacuum, and heat.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com