Technique for Locating Electronic Labels in an Electronic Price Display System, U.S. Patent 5,374,815 by G. Leibman, J. Stevens and P. Waterhouse

Improving On-Line Handwriting Recognition using a Prototype Confusability Dialog, U.S. Patent 5,315,667, May 1994, by Tetsunosuke Fujisaki, Joonki Kim, G. Leibman and C. C. Tappert

Methods and Apparatus for improving prototypes of similar characteristics, U.S. Patent 5,285,505, February 1994 by C. C. Tappert, J. Kim and G. Leibman