About: http://webisa.webdatacommons.org/399574311

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	FIG. 6 illustrates several features of the invention, one feature in particular being an especially advantageous seal for sealing the piston-fill chamber interface against environmental air and dirt.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com