Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881464 | Signal or rescue flare of variable luminosity | — | 1989-11-21 |
| 4819675 | Chemical removal of dental plaque | Edward L. Wilkinson | 1989-04-11 |
| 4812179 | Method of increasing the burning rate enhancement by mechanical accelerators | — | 1989-03-14 |
| 4812180 | High intensity yellow smoke and flame flare compositions | — | 1989-03-14 |