About: http://webisa.webdatacommons.org/250409778

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 filter, particularly the longitudinally rigid, smooth surfaced legs of the first and second stages of the filter, act as pins which minimize contact and resistance during withdrawal.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com