Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8040237 | Methods and apparatus to detect carrying of a portable audience measurement device | Daniel Nelson | 2011-10-18 |
| 7926073 | Methods and apparatus for indirect illumination in electronic media rating systems | John William Buonasera, Venugopal Srinivasan | 2011-04-12 |
| 7882514 | Display device on/off detection methods and apparatus | Dan Nelson | 2011-02-01 |