Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880167 | Irrigation hose with linear turbulent flow emitter | John M. Langa, Michael J. Boswell | 1989-11-14 |
| 4850531 | Drip emitter | — | 1989-07-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880167 | Irrigation hose with linear turbulent flow emitter | John M. Langa, Michael J. Boswell | 1989-11-14 |
| 4850531 | Drip emitter | — | 1989-07-25 |