Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8890683 | Device, system and method for tracking mobile assets | William R. Cave, Roland D. Keistler, Jr. | 2014-11-18 |
| 8803683 | System, method, and device for measuring and reporting changing levels of liquids in storage tanks | Claude T. Masters, George D. Survant | 2014-08-12 |
| 7978065 | Device, system and method for tracking mobile assets | William R. Cave, Roland D. Keistler, Jr. | 2011-07-12 |