Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12219209 | Methods and apparatus for metering portable media players | Perry Joseph Fisch | 2025-02-04 |
| 11882333 | Methods and apparatus for metering portable media players | Perry Joseph Fisch | 2024-01-23 |
| 11057674 | Methods and apparatus for metering portable media players | Perry Joseph Fisch | 2021-07-06 |
| 10356471 | Methods and apparatus for metering portable media players | Perry Joseph Fisch | 2019-07-16 |
| 9514135 | Methods and apparatus for metering portable media players | Perry Joseph Fisch | 2016-12-06 |
| 8914819 | Methods and apparatus for metering portable media players | Paul M. Mears, Robert A. Luff, Robert Stokes, Arun Ramaswamy, Charles Clinton Conklin +2 more | 2014-12-16 |