Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4657878 | Method of making high density, fusion cast basic metallurgical refractory and the refractory itself | Leonard W. Pokallus | 1987-04-14 |
| 4362686 | Collapsible core and method of using same | Melvin L. Neville, Leonard W. Pokallus | 1982-12-07 |