About: http://webisa.webdatacommons.org/326808520

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 ductwork cleaning system as claimed in claim 4 wherein said collar is a unitary element constructed from resilient plastic.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com