An operator (32) with transmitter overwrite protection is used with a plurality of different transmitters (40, 42, 44). Each type of transmitter has at least one command button that when actuated generates a signal which includes at least a transmitter identifying code. The operator includes a receiver...http://www.google.com.au/patents/US6903650?utm_source=gb-gplus-sharePatent US6903650 - Operator with transmitter storage overwrite protection and method of use
