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Michael J. Nelson
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Broomfield, CO, US
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last 30 patents
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Patent Grant
Method and system for providing emergency call service
Patent number
5,379,337
Issue date
Jan 3, 1995
U S West Advanced Technologies, Inc.
Michael J. Castillo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Grant
Emergency call system with call capacity/last chance routing feature
Patent number
5,323,444
Issue date
Jun 21, 1994
U S West Advanced Technologies, Inc.
Douglas J. Ertz
H04 - ELECTRIC COMMUNICATION TECHNIQUE