Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832459 | Backlighting for electro-optical passive displays and transflective layer useful therewith | William P. Harper | 1989-05-23 |
| 4816717 | Electroluminescent lamp having a polymer phosphor layer formed in substantially a non-crossed linked state | William P. Harper | 1989-03-28 |