About: http://webisa.webdatacommons.org/201807086

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	Preferably, one of the pumps is a foot-pad pump having a foot pad that fits against the surface of the inverted embossed film portion of said fluid chamber.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com