Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989843 | Retaining structure for refractory lining in high temperature vessel | William B. Dittrich | 1991-02-05 |
| 4573664 | Apparatus and method for removing inclusions | — | 1986-03-04 |