Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11492936 | Crankcase ventilation system with constant restriction in the flow direction and free flow in an opposite direction | Matthew C. Gilmer, David E. Fletcher, Chester E. Duffield, III, Mitchell Emond, Joseph Dennis | 2022-11-08 |
| 11486504 | Check valve insert defining an open position and check valves having same | David E. Fletcher, Matthew C. Gilmer, Chester E. Duffield, III | 2022-11-01 |