Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4383689 | Symbol game method | Michael Kohner, Albert Stubbmann | 1983-05-17 |
| 4332096 | Gravity flow display device | Michael Kohner | 1982-06-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4383689 | Symbol game method | Michael Kohner, Albert Stubbmann | 1983-05-17 |
| 4332096 | Gravity flow display device | Michael Kohner | 1982-06-01 |