Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9466234 | Sports event advertising display system | Joseph J. Berghammer, J. Pieter van Es | 2016-10-11 |
| 8968122 | Sports event advertising display system | Joseph J. Berghammer, Jonathan Pieter van Es | 2015-03-03 |
| 8366570 | Sports event advertising display system | Joseph J. Berghammer, Jonathan Pieter van Es | 2013-02-05 |
| 4519072 | Answer supervision system | William Fechalos | 1985-05-21 |