About: http://webisa.webdatacommons.org/130128161

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	FIG. 1 is a perspective view of a positive pressure respiration apparatus constructed according to the invention, enclosed within a case and including a breathing tube and an improved exhalation valve terminating at the breathing tube.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca