Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4378089 | Surface irrigation apparatus | John D. Wilken, Graham G. Curtis, David Shepherd | 1983-03-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4378089 | Surface irrigation apparatus | John D. Wilken, Graham G. Curtis, David Shepherd | 1983-03-29 |