Frank O. Voellmann

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Acton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Modem with integrated control processor and digital signal processo...
- Patent number 6,047,308
- Issue date Apr 4, 2000
- Cisco Technology, Inc.
- Grant Grummer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for processing multiple telephone calls
- Patent number 5,949,762
- Issue date Sep 7, 1999
- Telebit Corporation
- Douglas E. Green
- H04 - ELECTRIC COMMUNICATION TECHNIQUE