Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6965752 | On-line educational system having an electronic notebook feature | Vance Allen | 2005-11-15 |
| 6684053 | On-line educational system for processing exam questions and answers | Robert N. Helmick | 2004-01-27 |
| 6678500 | On-line educational system for grading of assignments and posting grade information in an on-line gradebook | Robert N. Helmick | 2004-01-13 |
| 6674992 | On-line educational system for document sharing | Robert N. Helmick | 2004-01-06 |
| 6470171 | On-line educational system for display of educational materials | Robert N. Helmick | 2002-10-22 |