Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7064664 | Graffiti detection system and method of using the same | George H. Lerg, Donald L. Roberts, Randy Johnson | 2006-06-20 |
| 6961002 | Sonic detection system and method of using the same | George H. Lerg, Donald L. Roberts | 2005-11-01 |
| 6632168 | Magnetic therapeutic device and method of use | Donald L. Roberts, Larry R. Haase | 2003-10-14 |
| 6600417 | Graffiti detection system and method of using the same | George H. Lerg, Donald L. Roberts, Randy Johnson | 2003-07-29 |
| 6337012 | Universal magnetic filter insert | — | 2002-01-08 |
| 6288643 | Graffiti detection system and method of using the same | George H. Lerg, Donald L. Roberts, Randy Johnson | 2001-09-11 |
| 6281787 | Vehicle tire leak detection system and method of using the same | George H. Lerg, Donald L. Roberts, Randy Johnson | 2001-08-28 |
| 6281792 | Firearm shot detection system and method of using the same | George H. Lerg, Donald L. Roberts, Randy Johnson | 2001-08-28 |
| 5836867 | Magnetic coupling assembly for endoscope | Craig Speier | 1998-11-17 |