coaxial and fiber-optic cable connectors; cable extenders, namely, connection cables for use as extenders; cable line terminators, namely, electric cable line terminators used for ending transmission line; coaxial cable adaptor and electric cable adapter; cable splice blocks in the nature of electrical power distribution blocks; jumper cables; plastic tubing specially adopted for cables sold together with coaxial and fiber optic cables as a unit; signal filters, namely, traps for signal filte...