Richard Frank Stiefel

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Frelinghuysen Township, Warren County, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Longitudinally balanced, dual voltage line-feed circuit
- Patent number 5,721,774
- Issue date Feb 24, 1998
- Lucent Technologies Inc.
- Richard Frank Stiefel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Line feed circuit with logic level controlled ringing
- Patent number 5,659,608
- Issue date Aug 19, 1997
- Lucent Technologies Inc.
- Richard Frank Stiefel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE