Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875919 | Direct contact raining bed counterflow cullet preheater and method for using | Edward F. Doyle, Christopher I. Metcalfe, Keith D. Patch | 1989-10-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875919 | Direct contact raining bed counterflow cullet preheater and method for using | Edward F. Doyle, Christopher I. Metcalfe, Keith D. Patch | 1989-10-24 |