<http://webisa.webdatacommons.org/131309096>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/131309096>	<http://www.w3.org/ns/prov#value>	"In another embodiment of the present invention, the elements which contact device 16 need not be ring shaped, rather they, too, may be another shape, such as rectangular for example." .
<http://webisa.webdatacommons.org/prov/35388206>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/131309096> .
<http://webisa.webdatacommons.org/131309096>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .