David J. Stelt

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Lombard, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Dual rail time control unit for a T-S-T-digital switching system
- Patent number 4,406,005
- Issue date Sep 20, 1983
- GTE Automatic Electric Labs Inc.
- Nathaniel Simmons
- H04 - ELECTRIC COMMUNICATION TECHNIQUE