Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701388 | Combined heater and pump | Michael D. Steinhardt, Isadore Balan | 1997-12-23 |
| 5681025 | Motor operated butterfly valve with a multi-function seal | Weldon R. Kuhn, John A. Fiumefreddo, Isadore Balan | 1997-10-28 |