A fishing rod is provided which has a hollow tapered rod body of generally circular exterior cross-section which tapers from a large diameter handle end to a small diameter tip end, and a hollow interior extending along the rod axis which tapers in the same direction as the exterior of the rod. The rod...http://www.google.es/patents/US4043074?utm_source=gb-gplus-sharePatente US4043074 - Graphite fiber fishing rod
