<http://webisa.webdatacommons.org/252673558>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/prov/409911382>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/252673558> .
<http://webisa.webdatacommons.org/252673558>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/252673558>	<http://www.w3.org/ns/prov#value>	"relatively flexible material, such as silicone elastomer or a thin teflon sheet which is pressed between the sheets of material in the chamber walls 104 and 102." .