Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8670708 | Portable wireless through-the-earth communication system | Daniel P. Burris, Thomas D. Hosbach, Mark O. Oerkfitz, John P. Weiblen | 2014-03-11 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8670708 | Portable wireless through-the-earth communication system | Daniel P. Burris, Thomas D. Hosbach, Mark O. Oerkfitz, John P. Weiblen | 2014-03-11 |