Joseph Barron

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Newbury Park, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Telephone ringback test device and method
- Patent number 6,005,921
- Issue date Dec 21, 1999
- Harris Corporation
- David W. Keefe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Arrangement for testing telephone subscriber line circuit via B-ISD...
- Patent number 5,680,391
- Issue date Oct 21, 1997
- Harris Corporation
- Joseph E. Barron
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Programmable source for supplying controllably variable AC/DC volta...
- Patent number 5,521,959
- Issue date May 28, 1996
- Harris Corporation
- Richard L. Walsworth
- H04 - ELECTRIC COMMUNICATION TECHNIQUE