| http://www.w3.org/ns/prov#value | - Petitioner's expert testified at the trial, as the prior art shows, that Torchio was not the first to discover that oil is an insulating material; that he was not the first to provide a cable with conductors inclosed in insulating material permeated with oil, or the first to make joints in a cable or to use pervious insulated wrappings of joints, or to show a sleeve inclosing the joint larger than
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