Blonder, GregFulton, Theodore A2019-07-102019-07-101992-09-221990-12-14Greg Blonder, Theodore A Fulton. "Fine line scribing of conductive material." U.S. Patent 5,149,404-A.5,149,404https://hdl.handle.net/2144/36490Fine lines (approximately 3 microns or less) are patternable on conductive materials by electromachining techniques. These micro-techniques differ from conventional electromachining in that the linewidth is primarily determined by the characteristics of the electric field rather than the electrode geometry.PCBPrinted circuit boardsPatent429657