Patent ID: 6740246
Filing Date: 2004-05-25
Classification: H05K,Y10T

Abstract:
A method for making an electric circuit board comprising the steps of:providing a member having a central layer of a first material which is operatively contained between first and second layers of a second material; placing a layer of a third material upon certain portions of said first layer, thereby exposing at least one portion of said first layer; placing a plurality of layers of said second material on top of said layer of third material, effective to form a multi-layer circuit board having an aperture which extends through said formed circuit board and which terminates upon said exposed at least one portion of said first layer; forming at least one slotted aperture through said central layer and through said first and second layers of a second material; forming a sighting window within each of said plurality of layers of said second material and forming at least one sighting window within said layer of said third material, said at least one sighting window of said third material being visually aligned with said at least one slotted aperture, thereby allowing said third material to be operatively placed upon predetermined portions of said first layer in a desired position.