David Clark Byrd

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Round Rock, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Low power low cost illuminated keyboards and keypads
- Patent number 8,540,384
- Issue date Sep 24, 2013
- Andrew J. Katrinecz
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low power, low cost illuminated keyboards and keypads
- Patent number 7,883,227
- Issue date Feb 8, 2011
- Andrew Katrinecz
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low power, low cost illuminated keyboards and keypads
- Patent number 7,284,872
- Issue date Oct 23, 2007
- Andrew Katrinecz
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Low power, low cost illuminated keyboards and keypads
- Patent number 6,773,128
- Issue date Aug 10, 2004
- Twenty-First Century Technology, Inc.
- Andrew J. Katrinecz
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Low power, low cost illuminated keyboards and keypads
- Patent number 6,199,996
- Issue date Mar 13, 2001
- Twenty-First Century Technology, Inc.
- Andrew J. Katrinecz
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
LOW POWER LOW COST ILLUMINATED KEYBOARDS AND KEYPADS
- Publication number 20110216524
- Publication date Sep 8, 2011
- Andrew J. Katrinecz, JR.
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Low power, low cost illuminated keyboards and keypads
- Publication number 20040223318
- Publication date Nov 11, 2004
- Andrew J. Katrinecz
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Low power, low cost illuminated keyboards and keypads
- Publication number 20010002166
- Publication date May 31, 2001
- Twenty First Century Technology, Inc.
- Andrew J. Katrinecz
- G06 - COMPUTING CALCULATING COUNTING