Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11988167 | Plunger seal apparatus and sealing method | Anthony Michael Gunasekera, Donald Michael Corsmeier, Bernard James Renggli | 2024-05-21 |
| 11655722 | Seal assembly and sealing method | Dale Szul, Donald Michael Corsmeier, Bernard James Renggli, Andrew Keppeler | 2023-05-23 |