QUADRA

Electric devices and instruments, namely, detectors of voltage, current, phase, frequency,impedance, biomaterials and chemicals; sensors of voltage, current, phase, frequency and impedance, biomaterials and chemicals; sensing elements for sensors of electrical voltage, current, phase, frequency, and impedance, biomaterials and chemicals, including electrodes; electrical controlling devices, electric converters; electric measuring instruments, namely, voltage, impedance, current, phase and analyzers, including spectrum analyzers, including impedance spectrum analyzers; voltmeters

Engineering design services; engineering services related to electrical spectrum measurements, including impedance spectrum measurements; technical research related to electrical spectrum measurements, including impedance spectrum measurements