Amplifiers; Dynamometers; Batteries, electric, for vehicles; Electronic and optical communications instruments and components, namely, optical receivers; Fiber optic instruments, namely, fiber switches; Fiber optics; Galvanic batteries; Radio-frequency power meters; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers...