About: http://webisa.webdatacommons.org/191886522

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	According to this invention, the sweep roller is formed in a multilayer structure including a core metal and an elastic layer with at least one layer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr