Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10877495 | Pressure loaded regulator with dual diaphragm and redundant seal | Neal A. Ackerman, Timothy R. Hawkins, Tony A. Durant | 2020-12-29 |
| 9989977 | Mechanism and method to adjust size of balanced valve | Daniel G. Roper, Harold J. McKinney, Douglas J. Scheffler | 2018-06-05 |
| 9952605 | Pilot operated fluid regulators having a reset apparatus and related methods | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Harold J. McKinney | 2018-04-24 |
| 9145904 | Pilot operated fluid regulators having a reset apparatus and related methods | James Lyman Griffin, Jr., Daniel G. Roper, Douglas J. Scheffler, Harold J. McKinney | 2015-09-29 |