Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10677054 | Cutting bit assembly | Randy W. Arnold, James E. Folkerts, John R. Frederick, John Hallberg, James Krellner +7 more | 2020-06-09 |
| 9850755 | Bit configuration for a cutter head | Bulent Tiryaki, David Bayne | 2017-12-26 |
| 9454739 | Multi-period financial simulator of a process | — | 2016-09-27 |
| 6530173 | Portable electronic apparatus to attract and kill flies in outdoor environments | Robert H. Richardson | 2003-03-11 |
| 6401383 | Electronic apparatus to attract and kill flies in indoor and outdoor environments | Robert H. Richardson | 2002-06-11 |
| 5979107 | Electronic fly population control apparatus | Robert H. Richardson | 1999-11-09 |