Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855647 | Flashlight with soft turn on control | David R. Schaller, Charles E. Samson | 1989-08-08 |
| 4835077 | AgO cathode material | Alexander K. Fung | 1989-05-30 |
| 4803605 | Flashlight with a backup system | David R. Schaller, James U. Neyer, Tor Petterson | 1989-02-07 |