About: http://webisa.webdatacommons.org/8046681

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 convoluted diaphragms shown in the embodiment of FIG. 1 are preferably constructed of an elastomer such as silicone or butyl rubber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr