Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5471867 | Inventory reconciliation for above ground storage tanks | John E. Tuma, Glenn A. Kauffman | 1995-12-05 |
| 5461906 | Apparatus for confirming the presence of a leak in a liquid storage tank | Tom G. Bogle, John E. Tuma | 1995-10-31 |
| 5363093 | Method and apparatus for continuous tank monitoring | Glenn A. Kauffmann | 1994-11-08 |
| 5347849 | Water sensor that detects tank or vessel leakage | Mahan L. Reeme, Glenn A. Kauffman | 1994-09-20 |
| 5319956 | Method of confirming the presence of a leak in a liquid storage tank | Tom G. Bogle, John E. Tuma | 1994-06-14 |
| 5156047 | Water sensor that detects tanks or vessel leakage | John E. Tuma, Tommy G. Bogle | 1992-10-20 |
| 5092158 | Apparatus for testing leak detectors | John E. Tuma | 1992-03-03 |