Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12228220 | Modulating butterfly valve control | Keith David Weaver, Richard G. Otten | 2025-02-18 |
| 11802632 | Modulating butterfly valve control | Keith David Weaver, Richard G. Otten | 2023-10-31 |
| 10823289 | Floating ducts | Keith David Weaver, Nicholas Plagianos, Thomas Mast | 2020-11-03 |
| 10718225 | Passive gas-leak management system | Keith David Weaver, Stephen Dickison, David Michael Tiedeman, Nicholas Plagianos | 2020-07-21 |