Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6267447 | Inflatable bag assembly for lifting a load | John Kowalski, Fred P. Smith, Tim E. Grosland | 2001-07-31 |
| 6267448 | Inflatable bag assembly for lifting a load | John Kowalski, Fred P. Smith, Tim E. Grosland | 2001-07-31 |
| 5975643 | Inflatable bag assembly for lifting a load | Fred P. Smith, John Kowalski, Tim E. Grosland | 1999-11-02 |