Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5593085 | Method of manufacturing an impeller assembly | Henry J. Tohill, Russell B. Gallagher, Nils O. Hallstrom | 1997-01-14 |
| 4878678 | High temperature metallic gasket | John J. Hensley, Christian M. Waldhelm, Henry J. Tohill | 1989-11-07 |