Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4253590 | Dry heat setting refractory and methods of using same | John P. Holt | 1981-03-03 |
| 4231800 | Dry heat setting refractory and methods of using same | John P. Holt | 1980-11-04 |