Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5505846 | Plate shifter for filter press | Joel D. DeHaan, John A. VerBerkmoes, Nelson H. Tansey | 1996-04-09 |
| 5370795 | Plate shifter for filter press | Joel D. DeHaan, John A. VerBerkmoes, Nelson H. Tansey | 1994-12-06 |
| 5124936 | Method and apparatus for measuring airborne uranium and transuranium elements | Charles PELLETIER | 1992-06-23 |
| 5068883 | Hand-held contraband detector | David L. Delesdernier | 1991-11-26 |
| 4963255 | Plate shifter for filter press | Michael J. Brinks, Sherwood Steketee | 1990-10-16 |