About: http://webisa.webdatacommons.org/243190692

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	In a preferred embodiment of the invention, a wireless telephone system uses handsets which communicate with base stations, for example computers or telephones, using ultrasonic communication, as described herein.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca