Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996712 | Hearing aids | Roger F. Laurence, deceased | 1991-02-26 |
| 4911576 | Method for storing toxic waste material | Harold C. Hoffine, John M. Forsythe | 1990-03-27 |
| 4881849 | Method for storing toxic waste material | Harold C. Hoffine, John M. Forsythe | 1989-11-21 |