<http://webisa.webdatacommons.org/409775989>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/409775989>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/54774452>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/409775989> .
<http://webisa.webdatacommons.org/409775989>	<http://www.w3.org/ns/prov#value>	"The method of claim 1 wherein the first range of values is based upon a series of N tests of the pick-up coil after installation where N is a number not less than 1." .