3,119,270      January 28, 1964                Adjustable Range Transducer
                      3,727,214      April 10, 1973                     Synchronized Stroboscopic Display System
                     5,431,578      July 11, 1995                      Compression Mating Electrical Connector
                  6,402,539      June 11, 2002                     Underwater Cable Branching Apparatus
                  6,543,965      April 8, 2003                       Underwater Cable Branching Apparatus