Fiber optic cables; Fiber optic connectors; Fiber optic instruments, namely, mechanical fiber optic switches; Fiber optics; Fibre-optic cables; Fibre optic cables; Fibre optic couplings; Heat detection systems comprised of fiber optic linear loop configurations, heat detectors, monitors; Junction sleeves for fibre optics; Optical fiber cables; Optical fiber connectors; Optical fibers; Optical fibers sold as a component of fiber optical cables; Optical fibres; Optical fibres, telephone receive...