About: http://webisa.webdatacommons.org/221620095

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	Conventionally, lubricating oils have been used in internal combustion engines, transmissions and other mechanical devices so as to facilitate the smooth operation thereof.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com