About: http://webisa.webdatacommons.org/29993251

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	U.S. Pat. No. 2,257,848 of Larkin discloses a hip rest for patients comprised of a rigid material, such as wood.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com