Terry C. Helstrom

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Boynton Beach, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for wirelessly coupling a source signal to a r...
- Patent number 7,260,356
- Issue date Aug 21, 2007
- XM Satellite Radio, Inc.
- Terry C. Helstrom
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Combination satellite and terrestrial antenna
- Patent number 6,806,838
- Issue date Oct 19, 2004
- Delphi-D Antenna Systems
- Argy Petros
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Through glass RF coupler system
- Patent number 6,661,386
- Issue date Dec 9, 2003
- XM Satellite Radio
- Argy Petros
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Combination linearly polarized and quadrifilar antenna sharing a co...
- Patent number 6,621,458
- Issue date Sep 16, 2003
- XM Satellite Radio, Inc.
- Argy Petros
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for wirelessly coupling a source signal to a r...
- Publication number 20050227612
- Publication date Oct 13, 2005
- Terry C. Helstrom
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Combination satellite and terrestrial antenna
- Publication number 20040032373
- Publication date Feb 19, 2004
- Argy Petros
- H01 - BASIC ELECTRIC ELEMENTS