About: http://webisa.webdatacommons.org/3952785

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	A mechanical toothbrush according to claim 1, wherein the bearings supporting the distal ends of the flexible shafts each comprises a ball and socket joint including a hollow female socket and a ball engaged in said socket.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com