Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11428564 | Systems and methods for remotely measuring a liquid level using time-domain reflectometry (TDR) | Yogeshwar Dayal, William Francis Splichal, Jr., Steven D. Sawyer, Eric Rankin Gardner, Bruce J. Lentner | 2022-08-30 |
| 9074922 | Systems and methods for remotely measuring a liquid level using time-domain reflectometry (TDR) | Yogeshwar Dayal, William Francis Splichal, Jr., Steven D. Sawyer, Eric Rankin Gardner, Bruce J. Lentner | 2015-07-07 |
| 8413347 | Drain cleaning apparatus with electronic cable monitoring system | Paul W. Gress, Michael J. Rutkowski, Mark S. Olsson, Ray Merewether, Jeffrey A. Prsha | 2013-04-09 |
| 8176593 | Drain cleaning apparatus with electronic cable monitoring system | Paul W. Gress, Michael J. Rutkowski, Mark S. Olsson, Ray Merewether, Jeffrey A. Prsha | 2012-05-15 |
| 8046862 | Drain cleaning apparatus with electronic cable counter | Michael J. Rutkowski | 2011-11-01 |