The meter reading data transmission system includes a transmission unit having a meter reading transmitter coupled to a meter. The transmission unit further has an associated node for sending wireless meter reading messages. An intermediate transmission unit including a node receives the meter...http://www.google.fr/patents/US5764158?utm_source=gb-gplus-shareBrevet US5764158 - Meter reading data transmissiion system and method of using same
Meter reading data transmissiion system and method of using same
