Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6414650 | Sign system with field changeable screen size and message | John P. Nicholson, Gordon M. Melby, Steve J. McHenry, Paul C. Freeberg | 2002-07-02 |
| 6405664 | Processes and systems for using biomineral by-products as a fuel and for NOx removal at coal burning power plants | Terry J. Logan, James Dennen O'Neil, Ervin Faulmann | 2002-06-18 |
| 6175342 | Enhanced modular message board | Gordon M. Melby, Paul C. Freeberg | 2001-01-16 |
| 6150996 | Changeable message sign system with reconfigurable sign screen | John P. Nicholson, Gordon M. Melby, Steve J. McHenry, Paul C. Freeberg | 2000-11-21 |
| 5914698 | Modular message board | Gordon M. Melby, Paul Cobain | 1999-06-22 |
| 5213464 | Method and apparatus for dispensing and retrieving highway warning markers | John P. Nicholson, Eugene Luoma | 1993-05-25 |
| 5187993 | Actuator for remote control | John P. Nicholson | 1993-02-23 |