Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4980574 | Solar irrigation D.C. to A.C. power system supplying A.C. voltage at a precise power frequency | — | 1990-12-25 |
| 4680815 | Solar powered headwear fan | Gerald B. Hirsch, Stanley Volk, Dale Brann | 1987-07-21 |