About: http://webisa.webdatacommons.org/361863754

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	This invention relates in general to chemical indicating devices and in particular to a new and useful device for determining the presence of sulfur dioxide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com