icipantsUS5216603 *Oct 17, 1990Jun 1, 1993Action Technologies, Inc.Method and apparatus for structuring and managing human communications by explicitly defining the types of communications permitted between participantsUS5313636 *Aug 5, 1993May 17, 1994Intellicorp, Inc.Mosaic objects and method for optimizing object representation performance in an object-oriented representation system* Cited by e