About: http://webisa.webdatacommons.org/13748193

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 smoothing and burnishing effect of the ceramic or other material used according to the invention in the smoothing members is in part at least based upon the fine porosity of these materials used for the smoothing means.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com