74069746
Jun 18, 1990
May 28, 1991
Active Trademark
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