Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484813 | Bulldozer attachment to facilitate grading | John A. Tapio, Nels D. Tapio | 2002-11-26 |
| 6183160 | Screeding apparatus and method incorporating oscillating attachment | John A. Tapio, Nels D. Tapio | 2001-02-06 |
| 6152647 | Screeding method incorporating oscillating member | John A. Tapio, Nels D. Tapio | 2000-11-28 |
| 6129481 | Screed assembly and oscillating member kit therefor | John A. Tapio, Nels D. Tapio | 2000-10-10 |