Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866420 | Method of detecting a fire of open uncontrolled flames | — | 1989-09-12 |
| 4827588 | Method of making a turbine nozzle | — | 1989-05-09 |
| 4809770 | Archbound seal for toroidal regenerator | Ronald C. Pampreen | 1989-03-07 |