Paul R. Kerr

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Natick, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
DTMF tone detection and suppression with application to computer te...
- Patent number 6,396,851
- Issue date May 28, 2002
- NMS Communications Corporation
- Bruce Levens
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Global packet-switched computer network telephony server
- Patent number 6,343,086
- Issue date Jan 29, 2002
- Natural MicroSystems Corporation
- Michael Katz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
DTMF tone detection and suppression with application to computer te...
- Patent number 6,226,303
- Issue date May 1, 2001
- Natural MicroSystems Corporation
- Bruce Levens
- H04 - ELECTRIC COMMUNICATION TECHNIQUE