Frequency converters; Current converters; Converters, electric; Analog to digital converter (ADCs); Digital to analog converters (DACs); Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; Analogue to digital converters; Direct current converters; Digital to analogue converters; Electric power converters; Digital photo image converters; Electronic controllers for use with power converters; DC/AC power converters; Television and video converters; Electric converters; 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, fiber-to-the-home and ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices; Safety equipment, namely, a lifeline system for horizontal or vertical movement to which a worker is attached for protection against fall hazards, composed of line tension indicator, turnbuckle, bars, anchors, harnesses, lanyards, cables, anchorage connectors, carabiners, lifelines, stanchions, shock absorber