Issued Patents 2011
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079422 | Soil aerator assembly | David R. Maas | 2011-12-20 |
| 8028758 | Aeration device | David R. Maas | 2011-10-04 |
| 7931094 | Aeration device | David R. Maas | 2011-04-26 |
| 7926582 | Soil aeration device | David R. Maas | 2011-04-19 |
| 7896095 | Soil aerator | David R. Maas | 2011-03-01 |