Lo-Jack CorporationMethod of and system and apparatus for locating and/or tracking stolen or missing vehicles and the likeEP0246960A1 *May 15, 1987Nov 25, 1987Compagnie Financiere Saint-NicolasMethod for proximity locating the presence of a vector such as an object, animal, person, stationary or mobile, in particular a vehicle, and location system thereforEP0418181A1 *Sep 7, 1990Mar 20, 1991Teleco