About: http://webisa.webdatacommons.org/65322372

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 devices described and claimed in U.S. Pat. Nos. 4,197,827 and 4,423,717 are examples of the types of devices which utilize rotating wheels to eject the ball.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com