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Patent applications and USPTO patent grants for Marggraff; L. James.The latest application filed is for "tutorial apparatus".
Patent | Date |
---|---|
Write on interactive apparatus and method Grant 7,120,385 - Marggraff October 10, 2 | 2006-10-10 |
Interactive apparatus using print media Grant 6,985,139 - Marggraff , et al. January 10, 2 | 2006-01-10 |
Tutorial apparatus App 20050114776 - Wood, Michael C. ;   et al. | 2005-05-26 |
Interactive apparatus using print media App 20040140966 - Marggraff, L. James ;   et al. | 2004-07-22 |
Compact book and apparatus using print media App 20040104890 - Caldwell, John ;   et al. | 2004-06-03 |
Write on interactive apparatus and method App 20030162162 - Marggraff, L. James | 2003-08-28 |
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