About: http://webisa.webdatacommons.org/111882171

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	Apparatus of this kind is shown in U.S. Pat. No. 3,739,491, in which the housing is a single piece over the whole length of the apparatus and contains a single, asymmetrically disposed source of hot air.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es