Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5217296 | Solar powered light | David Tanner, John S. Frost, Mark R. Erickson | 1993-06-08 |
| 5204586 | Solar powered lamp having a circuit for providing positive turn-on at low light levels | — | 1993-04-20 |