electric cable incorporating a dielectric paper as the insulation, and various tapes as inner and outer semiconducting screens and impregnated with dielectric fluid; electric cable systems, namely, dielectric paper insulated electric cable installed in pipes and surrounded by circulating dielectric fluid

electrical cable insulating liquid and gas pressured apparatus utilizing oiled paper

electric cable incorporating laminated paper polypropylene as the insulation and impregnated with dielectric fluid; electric cable systems, namely, laminated paper polypropylene insulated cable installed in pipes and surrounded by circulating dielectric fluid

electrical cable insulating liquid pressured apparatus utilizing laminated paper polypropylene