A device to control the on/off operation of a television set. It is token activated with each of a number of tokens giving a fixed period of time. The device includes a case with a power cord, an electrical receptacle into which the television set power cord is plugged and secured, a token chute with...http://www.google.es/patents/US5125492?utm_source=gb-gplus-sharePatente US5125492 - Token operated television timer
