Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9726013 | No purge sampler | — | 2017-08-08 |
| 6837120 | No purge sampler | — | 2005-01-04 |
| 6481300 | No purge sampler | — | 2002-11-19 |
| 6416661 | Universal well screen filter | — | 2002-07-09 |
| 6230820 | Universal drive point device | — | 2001-05-15 |
| 5669454 | Drive point device | — | 1997-09-23 |
| 5570747 | Drive point device | — | 1996-11-05 |
| 5449045 | Drive point device | — | 1995-09-12 |
| 5146998 | Apparatus and method for underground sampling | K. Lynne Niehaus, David Mioduszewski | 1992-09-15 |
| 5046568 | Driven groundwater sampling device | — | 1991-09-10 |
| 4669554 | Ground water monitoring device and method | — | 1987-06-02 |