Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837044 | Rugate optical filter systems | Narayan P. Murarka, Kent J. Kogler, Craig S. Bartholomew, Howard T. Betz | 1989-06-06 |
| 4813509 | Mechanical energy storage and use system for motor vehicles | — | 1989-03-21 |