Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5854432 | Dual tube sampling system | Timothy J. Vollweiler | 1998-12-29 |
| 5432709 | Computer control system for portable self-contained ground water testing assembly | Timothy J. Vollweiler | 1995-07-11 |
| 5323800 | Washer for a portable self-contained ground water testing assembly | Timothy J. Vollweiler | 1994-06-28 |
| 5275198 | Portable self-contained ground water testing assembly | Timothy J. Vollweiler | 1994-01-04 |
| 5211203 | Portable self-contained ground water testing assembly | Timothy J. Vollweiler | 1993-05-18 |
| 5150622 | Vapor probe for soil gas vapor sampler | — | 1992-09-29 |
| 4949582 | Liquid sampler | — | 1990-08-21 |
| 4653336 | Combination soil auger and soil core sampler with sample retaining capacity | — | 1987-03-31 |