Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5735635 | Gravity feed watering system for plants | David B. R. Johnston, Vincent P. Johnston | 1998-04-07 |
| 5605008 | Plant shelter | David B. R. Johnston, Vincent P. Johnston | 1997-02-25 |
| 5398443 | Windowed shelter for plants | Vincent P. Johnston, David B. R. Johnston | 1995-03-21 |