About: http://webisa.webdatacommons.org/286199053

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	DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now more particularly to FIG. 1, a portion of ground 10 is illustrated with a segmented pipe 11 therein, which pipe can be case iron, clay, plastic or other material.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com