Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8635520 | Systems and methods for collaboratively annotating electronic documents | Robert N. Christiansen | 2014-01-21 |
| 7779347 | Systems and methods for collaboratively annotating electronic documents | Robert N. Christiansen | 2010-08-17 |