About: http://webisa.webdatacommons.org/315135578

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 the drawings, particularly FIGS. 3 and 7, there is illustrated one version of the fluid-filled instrument 20.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com