About: http://webisa.webdatacommons.org/90222374

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 this embodiment, a layer 40A of filler material other than lead is disposed under upper vessel housing 18.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com