A selectively releasing runner and substrate assembly 100 comprises a plurality of conductive runners 116 adhered to a substrate 112, a portion 118 of at least some of the conductive runners 116 have non-planar areas with the substrate 112. Additionally the portion 118 has a lower adhesion to the substrate...http://www.google.co.uk/patents/US5166774?utm_source=gb-gplus-sharePatent US5166774 - Selectively releasing conductive runner and substrate assembly having non-planar areas
