About: http://webisa.webdatacommons.org/209512699

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	20110219741DETERMINING FAN PARAMETERS THROUGH PRESSURE MONITORING - A method for determining the speed of at least one rotating fan, such as a propeller, through sensing pressure waves generated by the blades of the fan.
http://www.w3.org/ns/prov#wasQuotedFrom	faqs.org