M. Derek Patton

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Replaceable developer roller
- Patent number 7,221,889
- Issue date May 22, 2007
- Hewlett-Packard Development Company, L.P.
- M. Derek Patton
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Replaceable developer roller
- Publication number 20060204275
- Publication date Sep 14, 2006
- M. Derek Patton
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY