Inventor: van Duijn, Jan Mark
Inventor: Hansen, Hans A.
Inventor: Burton, Stephen
Inventor: Ritchie, John Stanley
Inventor: Burton, Stephen
Inventor: Burton, Stephen
Inventor: Crawford, James
Inventor: Ware, Richard G.
Inventor: Fransen, Marco J. W.
Inventor: Notcutt, Roger Crompton, Notcutt, Maud H.