Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622947 | Recuperative furnace | Herbert G. Hays | 1986-11-18 |
| 4449511 | Recuperative furnace | Herbert G. Hays | 1984-05-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4622947 | Recuperative furnace | Herbert G. Hays | 1986-11-18 |
| 4449511 | Recuperative furnace | Herbert G. Hays | 1984-05-22 |