75221124
Jan 3, 1997
software mechanism that serves as an intermediary between end-user clients and existing computer-based data and service providers, which embodies domain knowledge about the details of the data and service providers and utilizes this knowledge to process requests for data and/or services from end-user clients, and maintains information about the end-user clients such as history and preferences and utilizes this information to process service requests
Electrical and Scientific Apparatus