Eric L. McDonald

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Revere, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Modem with ring detection/modem processing capability
- Patent number 6,289,087
- Issue date Sep 11, 2001
- Zoom Telephonics, Inc.
- Jason A. Reyes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modem with ring detection/modem processing capability
- Patent number 6,081,587
- Issue date Jun 27, 2000
- Zoom Telephonics, Inc.
- Jason A. Reyes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modem with ring detection/modem processing capability
- Patent number 5,835,578
- Issue date Nov 10, 1998
- Zoom Telephonics, Inc.
- Jason A. Reyes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modem with ring detection/modem processing capability
- Patent number 5,361,296
- Issue date Nov 1, 1994
- Zoom Telephonics, Inc.
- Jason A. Reyes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE