About: http://webisa.webdatacommons.org/142952737

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	Alternatively, especially if intended for use as aprefilter, the entire thickness of the fibrous portion of the filter can be varied in an appropriate profile with the largest pores upstream to the smallest pores downstream.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com