A fire extinguishing head includes a pair of medium range nozzles having a shooting distance shorter than that of a long range nozzle and disposed on opposite sides of the long range nozzle in such a manner as to sandwich the long range nozzle. A short range nozzle having a shooting distance shorter...http://www.google.es/patents/US5653391?utm_source=gb-gplus-sharePatente US5653391 - Fire extinguishing head
