Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823525 | Skylight structure | Joseph W. Roberts, Gordon MacLeod | 1989-04-25 |
| 4668120 | Solar-powered illuminated reflector | — | 1987-05-26 |
| 4575786 | Radiation emitting apparatus | — | 1986-03-11 |