United States Patents
4,356,446 - Time Division Multiplier Transducer with Selective Phase Shift
4,408,283 - Time Division Multiplier Transducer with Digitally Derived Phase Shift Adjustment for Reactive Power and Energy Measurement
4,615,009 - Electronic Energy and Power Monitoring Apparatus
4,744,004 - Electricity Meter with Solid-State Circuits
4,868,893 - System for Remote, Interactive Communication with a Meter Under Ambient Sunlight Conditions
4,884,021 - Digital Power Metering
5,122,735 - Digital Power Metering
6,181,294 - Antenna for Electric Meter and Method of Manufacture Thereof
6,462,713 - Antenna for Electric Meter and Method of Manufacture Thereof
6,903,699 - Wireless Communication Device for Electric Meter and Method of Manufacture Thereof
Canada Patents
1,162,301 - Time Division Multiplier Transducer with Selective Phase Shift
1,173,157 - Time Division Multiplier Transducer with Digitally Derived Phase Shift Adjustment for Reactive Power and Energy Measurement
1,238,364 - Electronic Energy and Power Monitoring Apparatus
1,290,400 - Digital Power Metering
2,043,235 - Digital Power Metering
2,245,251 - Antenna for Electric Meter and Method of Manufacture Thereof