Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326013 | Energy system | Mark Madden | 1982-04-20 |
| 4309874 | Fuel cell powered irrigation system | Mark Madden | 1982-01-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326013 | Energy system | Mark Madden | 1982-04-20 |
| 4309874 | Fuel cell powered irrigation system | Mark Madden | 1982-01-12 |