About: http://webisa.webdatacommons.org/91431201

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	An arrangement such as shown in the '567 patent selectively permits introduction of medication through the side port but prevents back flow through the side port after the introduction.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es