Printed circuit boards and methods for uniformly electroplating narrow, closely spaced circuitry lines onto such a circuit board substrates are disclosed. The method comprises providing an electroplating tank containing an electroplating solution with at least one anode immersed therein. A conductive...http://www.google.es/patents/US4678545?utm_source=gb-gplus-sharePatente US4678545 - Printed circuit board fine line plating