Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834650 | Sealed rotary hearth furnace with central bearing support | James Docherty, Beverly E. Johnson | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834650 | Sealed rotary hearth furnace with central bearing support | James Docherty, Beverly E. Johnson | 1989-05-30 |