73521679
Feb 11, 1985
Aug 13, 1985
ELECTRONIC DEVICES, NAMELY, ELECTRIC POWER/DEMAND ANALYZERS; DC/AC VOLTAGE DISTURBANCE ANALYZERS; POWER LINE DISTURBANCE ANALYZERS; SEQUENCE OF EVENTS RECORDERS; TIME EVENT ANALYZERS; SAMPLING NETWORK ANALYZERS; WIDE-BAND PHASE-ANGLE VOLTMETERS, POWER AND HARMONIC ANALYZERS; POWER SYSTEM METERS; POWER SYSTEM PHASE METERS AND PHASE-ANGLE METERS
Electrical and Scientific Apparatus