A method and apparatus for detecting and enabling correction of a failure in the mounting of electronic parts on substrates, capable of automatically and efficiently accomplishing the detection of a failure in the mounting of electronic parts on substrates, and classification between failed substrates...http://www.google.de/patents/US4787143?utm_source=gb-gplus-sharePatent US4787143 - Method for detecting and correcting failure in mounting of electronic parts on substrate and apparatus therefor
