About: http://webisa.webdatacommons.org/328934533

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	Continuous flow gas metering devices are known in the art For example, U.S. Pat. No. 4,266,573 to Braatz discloses an anesthesia machine for providing a mixture of oxygen and a second gas, such as nitrous oxide, in selected proportions.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au