Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854860 | Convective heat transfer within an industrial heat treating furnace | — | 1989-08-08 |
| 4854863 | Convective heat transfer within an industrial heat treating furnace | — | 1989-08-08 |
| 4840559 | Seal arrangement for high temperature furnace applications | — | 1989-06-20 |
| 4830610 | High temperature convection furnace | — | 1989-05-16 |