Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4987883 | Evacuated solar collector tube | Albert W. Watkins | 1991-01-29 |
| 4611857 | Solar powered focusing and directing apparatus for cutting, shaping, and polishing | — | 1986-09-16 |