Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5854432 | Dual tube sampling system | Arthur R. Vollweiler | 1998-12-29 |
| 5432709 | Computer control system for portable self-contained ground water testing assembly | Arthur R. Vollweiler | 1995-07-11 |
| 5323800 | Washer for a portable self-contained ground water testing assembly | Arthur R. Vollweiler | 1994-06-28 |
| 5275198 | Portable self-contained ground water testing assembly | Arthur R. Vollweiler | 1994-01-04 |
| 5211203 | Portable self-contained ground water testing assembly | Arthur R. Vollweiler | 1993-05-18 |