Citas de patentes Patente citada Fecha de presentaci???n Fecha de publicaci???n Solicitante T???tuloUS520874819 Jun 19894 May 1993Action Technologies, Inc.Method and apparatus for structuring and managing human communications by explicitly defining the types of communications permitted between participantsUS521660317 Oct 19901 Jun 1993Action Technologies, Inc.Method and apparatus for structuring a