73698302
Nov 30, 1987
Aug 30, 1988
ELECTRICITY SUPPLY METERS, ELECTRICAL LOAD SWITCHING APPARATUS, ELECTRICAL SIGNALLING APPARATUS FOR REMOTELY READING ELECTRICITY SUPPLY METERS AND FOR REMOTELY CONTROLLING ELECTRICAL LOAD SWITCHING APPARATUS, COMPUTER CONTROLLED APPARATUS FOR REMOTELY MONITORING AND CONTROLLING ELECTRICITY SUPPLY METERS AND ELECTRICAL LOAD SWITCHING APPARATUS
Electrical and Scientific Apparatus