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United States Utility Patents
4,999,830 - 4,999,839

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NumberTitle
4,999,830 Communication system analog-to-digital converter using echo information to improve resolution
4,999,831 Synchronous quantized subcarrier multiplexer for digital transport of video, voice and data
4,999,832 Broadband multirate switching architecture
4,999,833 Network connectivity control by artificial intelligence
4,999,834 Communication method and apparatus
4,999,835 Method and device for asynchronous mode transmission putting microcells into use
4,999,836 ISDN network termination unit enabling to establish data link between one terminal equipment and other terminal equipments connected to the unit without use of subscriber line
4,999,837 Programmable channel error injection
4,999,838 Failure recovery informing arrangement with simplified hardware in a data processing system
4,999,839 Amplifier-oscillator free electron laser



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