A portable self-powered electronic cardiopulmonary resuscitation prompting system includes a keyboard on the front panel for turning the apparatus on, identifying the nature of the victim, the number of rescuers, whether mouth-to-mouth resuscitation is to be given and whether the victim is conscious...http://www.google.com.hk/patents/USRE34800?utm_source=gb-gplus-share專利 USRE34800 - Cardiopulmonary resuscitation prompting
