About: http://webisa.webdatacommons.org/376546803

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 use of such television cameras as part of a closed circuit television system in conjunction with sewer line inspection and packing systems is well known, as described in U.S. Pat. No. 4,484,602 and in U.S. Pat. No. 3,750,711.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr