Patent ID: 7614800

Claim:
A printed circuit board comprising: a plurality of printed connector contact areas disposed along a third edge of the printed circuit board for coupling to an external electrical connector, the connector contact areas disposed on a first side and a second side of the printed circuit board; a first printed pattern of fiducial marks on the first side of the printed circuit board including a first sequence of spaced indicia located directly adjacent to and extending parallel to a first edge of the board, and a second sequence of spaced indicia located directly adjacent to and extending parallel to a second edge of the board opposite said first edge, said spaced indicia of each sequence being arranged along corresponding board edges with a distance measured perpendicular to the board edges between corresponding edges of adjacent indicia of the sequences parallel to and facing the respective board edges equal to a different tolerance fraction so that after the cutting or routing of the board and the formation of the first and second edges, the accuracy of the cutting or routing as determined by the location of each edge with respect to the connector contact areas on the first side of the printed circuit board and the width of the printed circuit board is commensurately defined by the number of fiducial marks of the first printed pattern physically present and remaining along the respective edges whereby the quality acceptability of the board is functionally determined by a predetermined range in the number of fiducial marks of the first printed pattern along such respective edges; a second printed pattern of fiducial marks on the second side of the printed circuit board including a third sequence of spaced indicia parallel to the first edge of the board, and a fourth sequence of spaced indicia parallel to the second edge, the accuracy of the cutting or routing being determined by the location of each edge with respect to the connector contact areas on the second side of the printed circuit board and the width of the printed circuit board is commensurately defined by the number of fiducial marks of the second printed pattern physically present and remaining along the respective edges of the second side of the printed circuit board.