Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848924 | Acoustic pyrometer | Steven P. Nuspl, Edmund P. Szmania, John A. Kleppe | 1989-07-18 |
| 4832579 | Plural hydraulic pump system with automatic displacement control and pressure relief valve | — | 1989-05-23 |