Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884620 | Hot box process for preparing foundry shapes with certain aqueous phenolic resin solutions | William R. Dunnavant, Heimo J. Langer | 1989-12-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884620 | Hot box process for preparing foundry shapes with certain aqueous phenolic resin solutions | William R. Dunnavant, Heimo J. Langer | 1989-12-05 |