About: http://webisa.webdatacommons.org/291153953

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 a system as set forth in claim 1, wherein said drive shaft is generally vertical, said rack and pinion means including racks which are movable generally in horizontal paths.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com