74271593
May 1, 1992
Jul 13, 1993
computer programs in the field of spreadsheets, databases, application development, user interfaces, object-oriented programming, programming tools and utilities, and programmer productivity enhancement software, particularly for use in windows environments, and productivity applications for business, commercial, scientific, technical, educational and personal computing uses, all using windows techniques, and instructional manuals distributed therewith
Electrical and Scientific Apparatus