About: http://webisa.webdatacommons.org/412529813

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	Earth or rock drilling and boring tools such as are used, for example, in the mining and oil production fields are particularly benefited from the present invention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au