86382823
Sep 2, 2014
May 5, 2015
Electrostatic voltmeters; instrumentation for locating static charged and measuring ionizer performance, namely, electrostatic fieldmeters; coulomb meters for the purpose of measuring quantities of electrical charge on an object or in a circuit; resistivity meters for the purpose of measuring electrical resistance on a surface or through the material being tested; emergency alert system comprised of hardware and software for providing emergency information to the public; and CATV electrical switches and electronic controls for use in broadcasting
Electrical and Scientific Apparatus