Geoffrey McCullough

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Portadown, GB

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for adjusting filter frequency in relation to...
- Patent number 7,756,229
- Issue date Jul 13, 2010
- OPTIMUM Power Technology, L.P.
- Robert Douglas
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for adjusting filter frequency in relation to...
- Publication number 20070116167
- Publication date May 24, 2007
- Optimum Power Technology, L.P.
- Robert Douglas
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Apparatus and method for adjusting filter frequency in relation to...
- Publication number 20020122519
- Publication date Sep 5, 2002
- Optimum Power Technology, L.P.
- Robert Douglas
- H03 - BASIC ELECTRONIC CIRCUITRY