Roger P. Engdahl

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Herndon, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Enhanced overflow call processing
- Patent number 6,330,323
- Issue date Dec 11, 2001
- MCI Communications Corporation
- Louis G. Gottlieb
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telecommunications system for transferring a telephone call
- Patent number 5,617,471
- Issue date Apr 1, 1997
- Wesley D. Rogers
- H04 - ELECTRIC COMMUNICATION TECHNIQUE