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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	I claim such modifications as come within the scope of the appended claims. <- Previous Patent (Excavating equipment...) | Next Patent (Traction enhancing a...) ->
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com