US5270639A
|
|
Time of use register for use with a utility meter
|
US5298857A
|
|
Electrical energy meter with a precision integrator for current measurement
|
US5231347A
|
|
Power factor matching in an AC power meter
|
US5343143A
|
|
Shielded current sensing device for a watthour meter
|
US5158476A
|
|
Modular strain relief device for electrical connectors
|
US4998061A
|
|
Watthour meter with temperature compensation for wye connected systems
|
US4987363A
|
|
Electric energy meter with power outage recovery circuit
|
US5049810A
|
|
Watt-hour meter cover with battery hatch reset switch and optical communication port
|
US5066906A
|
|
Time of use register for use with a utility meter
|
CA1280464C
|
|
Replaceable resistors for calibrating a watthour meter
|
US4887028A
|
|
Watthour meter with isolation transformers having a feedback loop
|
US4902964A
|
|
Program clock for an electronic demand register with automatic calibration based on sensed line frequency
|
US4896106A
|
|
Watthour meter for wye connected systems
|
US4843306A
|
|
Replaceable resistors for calibrating a watthour meter
|