| http://www.w3.org/ns/prov#value | - om said one longitudinal end thereof, a portion extending from said perpendicular portion essentially parallel to the plane of said panel beyond said one longitudinal end thereof, the end of said portion bent in a radius to form a partially closed channel; and (d) a matching projection at one longitudinal end of the other of said plates, said projection including a portion projecting inwardly esse
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