An electrochemical etching cell (1) is proposed for etching an etching body (15) made at least superficially of an etching material. The etching cell (1) has at least one chamber filled with an electrolyte, and is provided with a first electrode (13), which at least superficially has a first electrode...http://www.google.es/patents/US6726815?utm_source=gb-gplus-sharePatente US6726815 - Electrochemical etching cell
