Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361779 | Lamp having a lamp vessel made of quartz glass, quartz glass and method of preparing quartz glass | Gerardus H. A. M. van der Steen | 1982-11-30 |
| 4336048 | Method of producing doped quartz glass | Gerardus H. A. M. van der Steen | 1982-06-22 |