David Ray Dettmer

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Austin, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Microprocessor-controlled full-duplex speakerphone using automatic...
- Patent number 7,130,413
- Issue date Oct 31, 2006
- Legerity, Inc.
- David Ray Dettmer
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Microprocessor-controlled full-duplex speakerphone using automatic...
- Patent number 6,978,009
- Issue date Dec 20, 2005
- Legerity, Inc.
- David Ray Dettmer
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Microprocessor-controlled full-duplex speakerphone using automatic...
- Publication number 20050063533
- Publication date Mar 24, 2005
- Legerity, Inc.
- David Ray Dettmer
- H03 - BASIC ELECTRONIC CIRCUITRY