In one embodiment, the steps for forming an electrical conductor between conductive layers of a printed circuit board include the following steps: (1) applying a first dielectric material on a first conductive layer; (2) forming a number of via holes at each of the predetermined locations in the first...http://www.google.de/patents/US5906043?utm_source=gb-gplus-sharePatent US5906043 - Programmable/reprogrammable structure using fuses and antifuses
