Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4594892 | Capacitance probe for liquid level measuring system | — | 1986-06-17 |
| 4418571 | Liquid level measuring system | Robert P. Hart, Donald W. Fleischer | 1983-12-06 |
| 4349882 | Liquid level measuring system | Robert P. Hart, Donald W. Fleischer | 1982-09-14 |
| 4213037 | Electrical counting mechanism | Donald W. Fleischer | 1980-07-15 |