1
William S Duvall, Matthew Kendall: Internet filtering system for filtering data transferred over the internet utilizing immediate and deferred filtering actions. Spyglass, Howrey & Simon, March 16, 1999: US05884033 (508 worldwide citation)

A client-based filtering system compares portions of incoming and/or outgoing messages to filtering information in a filter database, and determines whether to block or allow incoming and/or outgoing transmissions of messages in response to the comparison. In response to a match between the portion ...


2
Ernest L Long, William S Duvall, Donald P Allen: Message communication system. Amtel Systems Corporation, Flehr Hohbach Test Albritton & Herbert, April 12, 1983: US04380009 (58 worldwide citation)

A message communication system which provides instant messages and memoranda at a telephone user's desk. In an office complex, a message is transmitted over pre-existing office power lines to printers located in a user's office and is automatically posted with time of day, date and sequence number. ...


3
William S Duvall, William K English: Data processing system with multiple display apparatus. Xerox Corporation, Barry Paul Smith, W Douglas Carothers Jr, January 24, 1984: US04428065 (56 worldwide citation)

A data processing system comprises a first selection device for selecting a plurality of characters of a first set, the characters of the first set each being defined by a bit map of first predetermined dimensions. A second selection device is capable of selecting a plurality of characters of a seco ...


4
William S Duvall, William K English: Data processing system with character sort apparatus. Xerox Corporation, Barry Paul Smith, W Douglas Carothers Jr, November 3, 1981: US04298957 (32 worldwide citation)

A data processing system comprises a first storage device for storing character font data representative of a plurality of characters, each character being represented by the font data as a bit map of predetermined dimensions, the plurality of characters being stored in an ordered storage sequence. ...


5
Richard B Drabing, William S Duvall: Thermal message printer. Amtel Systems, Flehr Hohbach Test Albritton & Herbert, November 30, 1982: US04361726 (1 worldwide citation)

A thermal message printer for printing a wide block of text which is produced with low cost printheads. The printer includes a thermal printer having a first number of fixed printheads equal in number to the lines to be printed on thermographic paper. Each of the fixed printheads has a second number ...