About: http://webisa.webdatacommons.org/64513215

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	Field of the Invention.The present invention relates to ultrasonic transducer systems for detecting distances to an ultrasonic reflecting surface, such as a system used for detecting levels of materials in a tank.2.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com