Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853024 | Scrap recovery apparatus | — | 1989-08-01 |
| 4819247 | Glass melt furnace | Frank J. Macdonald | 1989-04-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853024 | Scrap recovery apparatus | — | 1989-08-01 |
| 4819247 | Glass melt furnace | Frank J. Macdonald | 1989-04-04 |