<http://webisa.webdatacommons.org/236156801>	<http://www.w3.org/ns/prov#value>	"Valve seat 48 is formed by a stamping process as is well known in the art and is preferably made from corrosion-resistant metal such as stainless steel or other suitable alloys as is also well known in the art." .
<http://webisa.webdatacommons.org/236156801>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/prov/374102246>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/236156801> .
<http://webisa.webdatacommons.org/236156801>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .