An optical fiber cable includes a core (22) comprising optical fibers (24-24) in ribbon or single fiber form and a sheath system (50) which provides flexibility for ease of handling and installation, strength to resist tensile and torsional stresses and rodent and/or lightning protection. The core is...http://www.google.es/patents/US4765712?utm_source=gb-gplus-sharePatente US4765712 - Optical fiber cable
