Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4332478 | Method and apparatus for reducing smoke emissions in an asphalt drum mixer | — | 1982-06-01 |
| 4309168 | System for combining multiple fuels to produce controllable gas temperatures in asphalt drum mixers | Fredric W. Prill | 1982-01-05 |