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George A Hellwarth, James B Hellwarth, David C Hellwarth, Jan G Hellwarth: Automated public phone control for charge and collect billing. Telequip Ventures, Curtis Morris & Safford, June 19, 1990: US04935956 (279 worldwide citation)

The charge and collect-call functions of a public telephone are arranged automatically by a microcomputer system preferably connected on customer premises between the phone terminal instrument and the local loop, wherein control of said instrument, network signaling and call placement voice promptin ...


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Donald E Doyle, George A Hellwarth, Jack L Quanstrom: Data flow component for processor and microprocessor systems. International Business Machines Corporation, D Kendall Cooper, William N Hogg, J Jancin Jr, November 29, 1983: US04418383 (154 worldwide citation)

A Large Scale Integration (LSI) data flow component is described for use as a building block, the component being capable of use singly or in combination to provide data flow paths and functions of different data widths for a processor or microprocessor. A component with an eight-bit data flow is de ...


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