Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4339074 | Method and apparatus for controlling the temperature in greenhouses | Jan A. Sundin, Lars B. Sjostrom | 1982-07-13 |
| 4245433 | Method and apparatus of growing plants without soil | Ernst H. S. Sjostedt | 1981-01-20 |