Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660121 | Folding framework and support legs | Donald A. Shank | 1997-08-26 |
| 5615451 | Roller assembly lift mechanism | Virgil D. Peterson, Gary W. Andert | 1997-04-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660121 | Folding framework and support legs | Donald A. Shank | 1997-08-26 |
| 5615451 | Roller assembly lift mechanism | Virgil D. Peterson, Gary W. Andert | 1997-04-01 |