The present invention provides a dielectric optical fiber cable which is capable of being remotely detected while buried. Specifically, this invention incorporates magnetic materials into existing elements of high strength sheath systems which are commonly used to enhance the tensile properties of many...http://www.google.es/patents/US5305411?utm_source=gb-gplus-sharePatente US5305411 - Dielectric optical fiber cables which are magnetically locatable
Dielectric optical fiber cables which are magnetically locatable
