Donald Ray Heller

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Pine Island, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for enhancing the integrity of mental competen...
- Patent number 7,181,158
- Issue date Feb 20, 2007
- International Business Machines Corporation
- Donald Ray Heller
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for enhancing the integrity of mental competen...
- Publication number 20040259062
- Publication date Dec 23, 2004
- International Business Machines Corporation
- Donald Ray Heller
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS