Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5509666 | Protected seal assembly and protective filter unit therefor | Dennis J. Abraham | 1996-04-23 |
| 5456475 | Protected seal assembly and protective filter unit therefor | Dennis J. Abraham | 1995-10-10 |
| 5152538 | Composite seal assembly | — | 1992-10-06 |