Method and apparatus for cutting a pattern of a printed wiring board and method and apparatus for cleaning a printed wiring board are provided, wherein a laser beam is irradiated onto a printed wiring board to evaporate the irradiated portion, to thereby cut a pattern or clean the printed wiring board....http://www.google.de/patents/US5319183?utm_source=gb-gplus-sharePatent US5319183 - Method and apparatus for cutting patterns of printed wiring boards and method and apparatus for cleaning printed wiring boards
