Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874984 | Fluorescent lamp based on a phosphor excited by a molecular discharge | A. Gary Sigai, Walter P. Lapatovich | 1989-10-17 |
| 4818433 | Process for producing lanthanum cerium aluminate phosphors | A. Gary Sigai, Charles W. Struck | 1989-04-04 |