Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8413904 | Keyboard layout for handheld electronic book reader device | Gregg Elliott Zehr, John E. Johnston, Symon Whitehorn | 2013-04-09 |
| 8018431 | Page turner for handheld electronic book reader device | Gregg Elliott Zehr, John E. Johnston, Jateen P. Parekh, Symon Whitehorn | 2011-09-13 |
| D585902 | Electronic media reader keypad | Gregg Elliott Zehr, John E. Johnston | 2009-02-03 |