Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7177954 | Interface system using hotspots | Philip A. van Allen | 2007-02-13 |
| 6411994 | Interface system for providing content using context hotspots | Philip A. van Allen | 2002-06-25 |