Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11724888 | Conveyor controllers | Charles R. Combs, James P. Knapke, Dimitar Ivanov Petrov, David W. Sellers | 2023-08-15 |
| 11247846 | Conveyor controllers | Charles R. Combs, James P. Knapke, Dimitar Ivanov Petrov, David W. Sellers | 2022-02-15 |
| 10654659 | Conveyor controllers | Charles R. Combs, James P. Knapke, Dimitar Ivanov Petrov, David W. Sellers | 2020-05-19 |
| 10233028 | Conveyor controllers | Charles R. Combs, James P. Knapke, Dimitar Ivanov Petrov, David W. Sellers | 2019-03-19 |
| 9555977 | Conveyor controllers | Charles R. Combs, James P. Knapke, Dimitar Ivanov Petrov, David W. Sellers | 2017-01-31 |
| 8757363 | Conveyor controllers | Charles R. Combs, James P. Knapke, Dimitar Ivanov Petrov, David W. Sellers | 2014-06-24 |
| 7357292 | Friction stir welding tool | Charles Tolle, Denis E. Clark | 2008-04-15 |
| 6089819 | Method and apparatus for palletizing and depalletizing layers of articles on stackable pallets | — | 2000-07-18 |