About: http://webisa.webdatacommons.org/283654171

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	The prior art apparatus has included muffling devices such as muffling materials placed in the exhaust passages of the power units in order to reduce the noise generated by the fluid motors.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com