Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5221891 | Control circuit for a solar-powered rechargeable power source and load | Rudolph W. Janda, Jerald L. Douglas | 1993-06-22 |
| 5086267 | Control circuit for a solar-powered rechargeable power source and load | Rudolph W. Janda, Jerald L. Douglas | 1992-02-04 |
| 5041952 | Control circuit for a solar-powered rechargeable power source and load | Rudolph W. Janda, Jerald L. Douglas | 1991-08-20 |