About: http://webisa.webdatacommons.org/34362965

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	While this device of U.S. Pat. No. 3,870,832 directly stimulates the ossicular chain of the inner ear of the user by bone conduction, it has many disadvantages and limitations including the following.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk