Robert J. Buttell

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Pocasset, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Programmable telecommunications switch for personal computer
- Patent number 5,598,409
- Issue date Jan 28, 1997
- Excel, Inc.
- Robert P. Madonna
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Programmable telecommunication switch for personal computer
- Patent number 5,321,744
- Issue date Jun 14, 1994
- Excel, Inc.
- Robert P. Madonna
- H04 - ELECTRIC COMMUNICATION TECHNIQUE