Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686795 | Fluorescent lamp with protected cathode to reduce end darkening | Johnson M. Kachidza, Richard C. Nagle | 1997-11-11 |
| 5677251 | Partially crystallizing enamel containing crystalline zinc borate seed material | — | 1997-10-14 |