Method and apparatus for causing an open circuit in a conductive lineBeckham, Keith F⋅Challener, David C⋅Gupta, Arunava⋅Harvilchuck, Joseph M⋅Leas, James M⋅Lloyd, James R⋅Long, David C⋅Quinones, Horatio⋅Seshan, Krishna and Shatzkes, Morris (Inventors).4962294