Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886539 | Method of vacuum refining of glassy materials with selenium foaming agent | David R. Haskins, Robert B. Heithoff, Ronald L. Schwenninger, Wright M. Welton | 1989-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886539 | Method of vacuum refining of glassy materials with selenium foaming agent | David R. Haskins, Robert B. Heithoff, Ronald L. Schwenninger, Wright M. Welton | 1989-12-12 |