In a method for electrochemical machining effected by disposing a work blank and a cathode opposite each other across a gap in an electrolyte and causing a flow of electric current to pass between said work blank and cathode, an improvement is disclosed which consists in using, as the electric current,...http://www.google.de/patents/US4113587?utm_source=gb-gplus-sharePatent US4113587 - Method for electrochemical machining
