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Dale M. Walsh
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Burr Ridge, IL, US
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last 30 patents
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Patent Grant
Asymmetrical duplex error-controlled modem
Patent number
5,008,901
Issue date
Apr 16, 1991
U.S. Robotics, Inc.
Clifford H. Wallach
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Modem for communicating at high speed over voice-grade telephone ci...
Patent number
4,890,316
Issue date
Dec 26, 1989
Dale M. Walsh
H04 - ELECTRIC COMMUNICATION TECHNIQUE