Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178817 | Material level sensing | Scott Hewelt, Michael C. Torzewski | 2001-01-30 |
| 6121780 | Material interface level sensing | William T. Cruickshank | 2000-09-19 |
| 5223819 | Material level indicating apparatus with status light and external test features | Robert T. Eichberger | 1993-06-29 |
| 5105662 | Liquid level measurement system | Randall J. Regentin | 1992-04-21 |
| 5103213 | Shaft rotation monitoring apparatus | Scott Hewelt | 1992-04-07 |
| 5048335 | Capacitance-type material level indicator | John R. Schutt, Bruce W. Campbell | 1991-09-17 |
| 4695685 | Rotating paddle bin level indicator | Phillip P. Fleckenstein | 1987-09-22 |
| RE31668 | Load survey recorder for measuring electrical parameters | Gary Morand, David G. Sokol | 1984-09-11 |