US8497749_page_16

US8497749 | page 16 | https://thedailydialectics.com/pdfs/wipow/US8497749/US8497749.pdf

US 8,497,749 B2 3 tion or special conditioning of the conductor generally restricted its use to off-beat problems; transmission to a device being towed from an airplane, communications within a mine and other situations where the expense of installing a specially prepared line was merited. 5 In…